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List of states with nuclear weapons

Eight sovereign states have publicly announced successful detonation of nuclear weapons.[1] Five are considered to be nuclear-weapon states (NWS) under the terms of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). In order of acquisition of nuclear weapons, these are the United States, Russia (the successor of the former Soviet Union), the United Kingdom, France, and China. Of these, the three NATO members, the UK, US, and France, are sometimes termed the P3.[2]

Map of nuclear-armed states of the world
  NPT-designated nuclear weapon states (China, France, Russia, United Kingdom, United States)
  Other states with nuclear weapons (India, North Korea, Pakistan)
  Other states presumed to have nuclear weapons (Israel)
  States formerly possessing nuclear weapons (Kazakhstan, South Africa, Ukraine)

Other states that possess nuclear weapons are India, Pakistan, and North Korea. Since the NPT entered into force in 1970, these three states were not parties to the Treaty and have conducted overt nuclear tests. North Korea had been a party to the NPT but withdrew in 2003.

Israel is also generally understood to have nuclear weapons,[3][4][5][6][7] but does not acknowledge it, maintaining a policy of deliberate ambiguity.[8] Israel is estimated to possess somewhere between 75 and 400 nuclear warheads.[9][10] One possible motivation for nuclear ambiguity is deterrence with minimum political cost.[11][12]

States that formerly possessed nuclear weapons are South Africa (developed nuclear weapons but then disassembled its arsenal before joining the NPT)[13] and the former Soviet republics of Belarus, Kazakhstan, and Ukraine, whose weapons were transferred to Russia.

According to Stockholm International Peace Research Institute (SIPRI), the worldwide total inventory of nuclear weapons as of 2021 stood at 13,080. Around 30% of these are deployed with operational forces,[14] and more than 90% are owned by either Russia or the United States.[15][16]

In its recent research, SIPRI estimated the total number of nuclear warheads acquired by nuclear states reached 12,512 in January 2023.

Approximately 9,576 are kept with military stockpiles. About 3,844 warheads are deployed with missiles. Two thousand warheads which are primarily from Russia and United States are maintained for high operational alerts.[17]

Statistics and force configuration Edit

 
Large stockpile with global range (dark blue), smaller stockpile with global range (medium blue), small stockpile with regional range (light blue)

The following is a list of states that have admitted the possession of nuclear weapons or are presumed to possess them, the approximate number of warheads under their control, and the year they tested their first weapon and their force configuration. This list is informally known in global politics as the "Nuclear Club".[18][19] With the exception of Russia and the United States (which have subjected their nuclear forces to independent verification under various treaties) these figures are estimates, in some cases quite unreliable estimates. In particular, under the Strategic Offensive Reductions Treaty thousands of Russian and U.S. nuclear warheads are inactive in stockpiles awaiting processing. The fissile material contained in the warheads can then be recycled for use in nuclear reactors.

From a high of 70,300 active weapons in 1986, as of 2019 there are approximately 3,750 active nuclear warheads and 13,890 total nuclear warheads in the world.[1] Many of the decommissioned weapons were simply stored or partially dismantled, not destroyed.[20]

It is also noteworthy that since the dawn of the Atomic Age, the delivery methods of most states with nuclear weapons have evolved—with some achieving a nuclear triad, while others have consolidated away from land and air deterrents to submarine-based forces.

Overview of nuclear states and their capacities
Country
Warheads[a]
First Test
NPT status[21]
CTBT status[22]
Delivery methods
Tests[23]
Total Deployed Date Site
  United States[24] 5,244 1,770 16 July 1945 (Trinity) Alamogordo, New Mexico Party Signatory Nuclear triad[25] 1,030
  Russia[26] 5,889 1,674 29 August 1949 (RDS-1) Semipalatinsk, Kazakh SSR Party Ratifier 715
  United Kingdom[1][27][4] 225 120 3 October 1952 (Hurricane) Monte Bello Islands, Australia Party Ratifier Sea-based[28][b] 45
  France[1][27][29] 290 280 13 February 1960 (Gerboise Bleue) Reggane, French Algeria Party Ratifier Sea- and air-based[30][c] 210
  China[1][27][4][31] 410 0[27] 16 October 1964 (596) Lop Nur, Xinjiang Party Signatory Nuclear triad[32][33] 45
  India[1][27][4][34] 160 0 18 May 1974 (Smiling Buddha) Pokhran, Rajasthan Non-Party Non-signatory Nuclear triad[35][36][37][38] 3
  Pakistan[1][4][39] 165 0 28 May 1998 (Chagai-1) Ras Koh Hills, Balochistan Non-Party Non-signatory Nuclear triad[40][41] 2
  North Korea[1][27][4][42] 30 0 9 October 2006[43] Kilju, North Hamgyong Announced Withdrawal[44] Non-signatory Land- and sea- based [45] 6
  Israel[1][4][46] 90[1][4] 0 1960–1979[47][d] Unknown Non-Party Signatory Suspected nuclear triad[49][50] Unknown

Recognized nuclear-weapon states Edit

These five states are known to have detonated a nuclear explosive before 1 January 1967 and are thus nuclear weapons states under the Treaty on the Non-Proliferation of Nuclear Weapons. They also happen to be the UN Security Council's (UNSC) permanent members with veto power on UNSC resolutions.

United States Edit

 
An early stage in the "Trinity" fireball, the first nuclear explosion, 1945

The United States developed the first nuclear weapons during World War II in cooperation with the United Kingdom and Canada as part of the Manhattan Project, out of the fear that Nazi Germany would develop them first. It tested the first nuclear weapon on 16 July 1945 ("Trinity") at 5:30 am, and remains the only country to have used nuclear weapons in war, devastating the Japanese cities of Hiroshima and Nagasaki. The project expenditure through 1 October 1945 was reportedly $1.845-$2 billion, in nominal terms,[51][52] roughly 0.8 percent of the US GDP in 1945 and equivalent to about $29 billion in 2020 money.[53]

It was the first nation to develop the hydrogen bomb, testing an experimental prototype in 1952 ("Ivy Mike") and a deployable weapon in 1954 ("Castle Bravo"). Throughout the Cold War it continued to modernize and enlarge its nuclear arsenal, but from 1992 on has been involved primarily in a program of stockpile stewardship.[54][55][56][57] The U.S. nuclear arsenal contained 31,175 warheads at its Cold War height (in 1966).[58] During the Cold War, the United States built approximately 70,000 nuclear warheads, more than all other nuclear-weapon states combined.[59][60]

Russia (successor to the Soviet Union) Edit

 
U.S. and USSR/Russian nuclear weapons stockpiles, 1945–2014

The Soviet Union tested its first nuclear weapon ("RDS-1") in 1949. This crash project was developed partially with information obtained via espionage during and after World War II. The Soviet Union was the second nation to have developed and tested a nuclear weapon. The direct motivation for Soviet weapons development was to achieve a balance of power during the Cold War. It tested its first megaton-range hydrogen bomb ("RDS-37") in 1955. The Soviet Union also tested the most powerful explosive ever detonated by humans, ("Tsar Bomba"), with a theoretical yield of 100 megatons, intentionally reduced to 50 when detonated. After its dissolution in 1991, the Soviet weapons entered officially into the possession of the Russian Federation.[61] The Soviet nuclear arsenal contained some 45,000 warheads at its peak (in 1986); the Soviet Union built about 55,000 nuclear warheads since 1949.[60]

United Kingdom Edit

 
A Trident missile launched from a Royal Navy Vanguard-class ballistic missile submarine

The United Kingdom tested its first nuclear weapon ("Hurricane") in 1952. The UK had provided considerable impetus and initial research for the early conception of the atomic bomb, aided by Austrian, German and Polish physicists working at British universities who had either fled or decided not to return to Nazi Germany or Nazi-controlled territories. The UK collaborated closely with the United States and Canada during the Manhattan Project, but had to develop its own method for manufacturing and detonating a bomb as U.S. secrecy grew after 1945. The United Kingdom was the third country in the world, after the United States and the Soviet Union, to develop and test a nuclear weapon. Its programme was motivated to have an independent deterrent against the Soviet Union, while also maintaining its status as a great power. It tested its first hydrogen bomb in 1957 (Operation Grapple), making it the third country to do so after the United States and Soviet Union.[62][63]

The British Armed Forces maintained a fleet of V bomber strategic bombers and ballistic missile submarines (SSBNs) equipped with nuclear weapons during the Cold War. The Royal Navy currently maintains a fleet of four Vanguard-class ballistic missile submarines equipped with Trident II missiles. In 2016, the UK House of Commons voted to renew the British nuclear weapons system with the Dreadnought-class submarine, without setting a date for the commencement of service of a replacement to the current system.

France Edit

 
French nuclear-powered aircraft carrier Charles de Gaulle (right) and the American nuclear-powered carrier USS Enterprise (left), each of which carries nuclear-capable warplanes

France tested its first nuclear weapon in 1960 ("Gerboise Bleue"), based mostly on its own research. It was motivated by the Suez Crisis diplomatic tension in relation to both the Soviet Union and its allies, the United States and United Kingdom. It was also relevant to retain great power status, alongside the United Kingdom, during the post-colonial Cold War (see: Force de frappe). France tested its first hydrogen bomb in 1968 ("Opération Canopus"). After the Cold War, France has disarmed 175 warheads with the reduction and modernization of its arsenal that has now evolved to a dual system based on submarine-launched ballistic missiles (SLBMs) and medium-range air-to-surface missiles (Rafale fighter-bombers). However, new nuclear weapons are in development and reformed nuclear squadrons were trained during Enduring Freedom operations in Afghanistan.[citation needed]

France acceded to the Nuclear Non-Proliferation Treaty in 1992.[64] In January 2006, President Jacques Chirac stated a terrorist act or the use of weapons of mass destruction against France would result in a nuclear counterattack.[65] In February 2015, President François Hollande stressed the need for a nuclear deterrent in "a dangerous world". He also detailed the French deterrent as "fewer than 300" nuclear warheads, three sets of 16 submarine-launched ballistic missiles and 54 medium-range air-to-surface missiles and urged other states to show similar transparency.[66]

China Edit

 
Mushroom cloud from China's first nuclear test, Project 596

China tested its first nuclear weapon device ("596") in 1964 at the Lop Nur test site. The weapon was developed as a deterrent against both the United States and the Soviet Union. Two years later, China had a fission bomb capable of being put onto a nuclear missile. It tested its first hydrogen bomb ("Test No. 6") in 1967, 32 months after testing its first nuclear weapon (the shortest fission-to-fusion development known in history).[67] China is the only NPT nuclear-weapon state to give an unqualified negative security assurance with its "no first use" policy.[68][69] China acceded to the Nuclear Non-Proliferation Treaty in 1992.[64] As of 2016, China fielded SLBMs onboard its JL-2 submarines.[70] As of May 2021, China had an estimated total inventory of 350 warheads.[71]

The Yearbook published by Stockholm International Peace Research Institute (SIPRI) in 2023 revealed that China's nuclear warheads stockpile increased by 17% in 2022, reaching 410 warheads.[17]

States declaring possession of nuclear weapons Edit

India Edit

 
Agni-V during its first test flight on 19 April 2012

India is not a party to the Nuclear Non-Proliferation Treaty. Indian officials rejected the NPT in the 1960s on the grounds that it created a world of nuclear "haves" and "have-nots", arguing that it unnecessarily restricted "peaceful activity" (including "peaceful nuclear explosives"), and that India would not accede to international control of their nuclear facilities unless all other countries engaged in unilateral disarmament of their own nuclear weapons. The Indian position has also asserted that the NPT is in many ways a neo-colonial regime designed to deny security to post-colonial powers.[72]

The country tested what is called a "peaceful nuclear explosive" in 1974 (which became known as "Smiling Buddha"). The test was the first test developed after the creation of the NPT, and created new questions about how civilian nuclear technology could be diverted secretly to weapons purposes (dual-use technology). India's secret development caused great concern and anger particularly from nations that had supplied its nuclear reactors for peaceful and power generating needs, such as Canada.[73] After its 1974 test, India maintained that its nuclear capability was primarily "peaceful", but between 1988 and 1990 it apparently weaponized two dozen nuclear weapons for delivery by air.[74] In 1998 India tested weaponized nuclear warheads ("Operation Shakti"), including a thermonuclear device.[75] India adopted a "no first use" policy in 1998.[76]

In July 2005, U.S. President George W. Bush and Indian Prime Minister Manmohan Singh announced a civil nuclear cooperation initiative[77] that included plans to conclude an Indo-US civilian nuclear agreement. This initiative came to fruition through a series of steps that included India's announced plan to separate its civil and military nuclear programs in March 2006,[78] the passage of the India–United States Civil Nuclear Agreement by the U.S. Congress in December 2006, the conclusion of a U.S.–India nuclear cooperation agreement in July 2007,[79] approval by the IAEA of an India-specific safeguards agreement,[80] agreement by the Nuclear Suppliers Group to a waiver of export restrictions for India,[81] approval by the U.S. Congress[82] and culminating in the signature of U.S.–India agreement for civil nuclear cooperation[83] in October 2008. The U.S. State Department said it made it "very clear that we will not recognize India as a nuclear-weapon state".[84] The United States is bound by the Hyde Act with India and may cease all cooperation with India if India detonates a nuclear explosive device. The US had further said it is not its intention to assist India in the design, construction or operation of sensitive nuclear technologies through the transfer of dual-use items.[85] In establishing an exemption for India, the Nuclear Suppliers Group reserved the right to consult on any future issues which might trouble it.[86] As of May 2021, India was estimated to have a stockpile of around 160 warheads.[87]

Pakistan Edit

 
Debris erupts from a mountain during an underground nuclear weapon detonation carried out as part of Pakistan's Chaghai-I series of tests.

Pakistan is also not a party to the Nuclear Non-Proliferation Treaty. Pakistan covertly developed nuclear weapons over decades, beginning in the late 1970s. Pakistan first delved into nuclear power after the establishment of its first nuclear power plant near Karachi with equipment and materials supplied mainly by western nations in the early 1970s. Pakistani Prime Minister Zulfiqar Ali Bhutto promised in 1971 that if India could build nuclear weapons then Pakistan would too, according to him: "We will develop Nuclear stockpiles, even if we have to eat grass."[88]

It is believed that Pakistan has possessed nuclear weapons since the mid-1980s.[89] The United States continued to certify that Pakistan did not possess such weapons until 1990, when sanctions were imposed under the Pressler Amendment, requiring a cutoff of U.S. economic and military assistance to Pakistan.[90] In 1998, Pakistan conducted its first six nuclear tests at the Ras Koh Hills in response to the five tests conducted by India a few weeks before.

In 2004, the Pakistani metallurgist Abdul Qadeer Khan, a key figure in Pakistan's nuclear weapons program, confessed to heading an international black market ring involved in selling nuclear weapons technology. In particular, Khan had been selling gas centrifuge technology to North Korea, Iran, and Libya. Khan denied complicity by the Pakistani government or Army, but this has been called into question by journalists and IAEA officials, and was later contradicted by statements from Khan himself.[91]

As of early 2013, Pakistan was estimated to have had a stockpile of around 140 warheads,[92] and in November 2014 it was projected that by 2020 Pakistan would have enough fissile material for 200 warheads.[93]

North Korea Edit

North Korea was a party to the Nuclear Non-Proliferation Treaty, but announced a withdrawal on 10 January 2003, after the United States accused it of having a secret uranium enrichment program and cut off energy assistance under the 1994 Agreed Framework. In February 2005, North Korea claimed to possess functional nuclear weapons, though their lack of a test at the time led many experts to doubt the claim. In October 2006, North Korea stated that, in response to growing intimidation by the United States, it would conduct a nuclear test to confirm its nuclear status. North Korea reported a successful nuclear test on 9 October 2006 (see 2006 North Korean nuclear test). Most U.S. intelligence officials believed that the test was probably only partially successful with a yield of less than a kiloton.[94][95] North Korea conducted a second, higher-yield test on 25 May 2009 (see 2009 North Korean nuclear test) and a third test with still-higher yield on 12 February 2013 (see 2013 North Korean nuclear test).

North Korea claimed to have conducted its first hydrogen-bomb test on 5 January 2016, though measurements of seismic disturbances indicate that the detonation was not consistent with a hydrogen bomb.[96] On 3 September 2017, North Korea detonated a device, which caused a magnitude 6.1 tremor, consistent with a low-powered thermonuclear detonation; NORSAR estimates the yield at 250 kilotons[97] of TNT. In 2018, North Korea announced a halt in nuclear weapons tests and made a conditional commitment to denuclearisation of the Korean Peninsula;[98][99] however, in December 2019, it indicated it no longer considered itself bound by the moratorium.[100]

Kim Jong-un officially declared North Korea a nuclear weapons state during a speech on 9 September 2022, the country's foundation day.[101]

States indicated to possess nuclear weapons Edit

Israel Edit

Israel is widely believed to have been the sixth country in the world to develop nuclear weapons, but it has not acknowledged its nuclear forces. It had "rudimentary, but deliverable," nuclear weapons available as early as 1966.[102][103][104][105][106][107][11] Israel is not a party to the NPT. Israel engages in strategic ambiguity, saying it would not be the first country to "introduce" nuclear weapons into the region, but refusing to otherwise confirm or deny a nuclear weapons program or arsenal. This policy of "nuclear opacity" has been interpreted as an attempt to get the benefits of deterrence with a minimal political cost.[11][12] Due to a US ban on funding countries that have weapons of mass destruction, Israel would lose around $2 billion a year in military and other aid from the US if it admitted to possessing nuclear weapons.[8]

According to the Natural Resources Defense Council and the Federation of American Scientists, Israel likely possesses around 80–400 nuclear weapons.[108][109] The Stockholm International Peace Research Institute estimates that Israel has approximately 80 intact nuclear weapons, of which 50 are for delivery by Jericho II medium-range ballistic missiles and 30 are gravity bombs for delivery by aircraft. SIPRI also reports that there was renewed speculation in 2012 that Israel may also have developed nuclear-capable submarine-launched cruise missiles.[110]

Launch authority Edit

The decision to use nuclear weapons is always restricted to a single person or small group of people. The United States and France require their respective presidents to approve the use of nuclear weapons. In the US, the Presidential Emergency Satchel is always handled by a nearby aide unless the President is near a command center. The decision rests with the Prime Minister in the United Kingdom. Information from China is unclear, but "the launch of nuclear weapons is commonly believed to rest with the Central Military Commission of the Chinese Communist Party." Russia grants such power to the President but may also require approval from the Minister of Defence and the Chief of the General Staff. The Supreme Commander of the Armed Forces has authority in North Korea. India, Pakistan and Israel have committees for such a decision.[111]

Some countries are known to have delegated launch authority to military personnel in the event that the usual launch authority is incapacitated; whether or not the 'pre-delegated' authority exists at any particular time is kept secret.[112] In the United States, some military commanders have been delegated authority to launch nuclear weapons "when the urgency of time and circumstances clearly does not permit a specific decision by the President." Russia has a semi automated Dead Hand system which may allow military commanders to act based on certain pre-defined criteria. British nuclear-armed submarine commanders are issued with "Letters of last resort" written by the Prime Minister containing secret instructions which may or may not give them delegated launch authority.[113]

Launch authority of nuclear states
Country Authority Notes
  United States President of the United States See the Presidential Emergency Satchel.[111][114]
  Russia President of Russia Briefcases may also be issued to the Minister of Defence and the Chief of the General Staff.[111][115][116][114]
  United Kingdom Prime Minister of the United Kingdom The Prime Minister and a secretly designated 'second' may order a launch, but this may be challenged by Parliament.[111][114]
  France President of France The Chief of the Military Staff of the President of the Republic and the Chief of the Defence Staff may also be involved in decisions.[111][114]
  China Central Military Commission The Chairman of the Central Military Commission is the Supreme Military Commander.[111][114]
  India Prime Minister of India Nuclear Command Authority includes an Executive Council and a Political Council.[111][114]
  Pakistan National Command Authority Requires a consensus of the council's members.[111][114]
  North Korea President of the State Affairs The president of the State Affairs is the ultimate decisionmaker in regards to North Korea's nuclear arsenal.[117]
  Israel Prime Minister of Israel Requires agreement of the Minister of Defense and Chief of the General Staff.[111]

Nuclear weapons sharing Edit

Nuclear weapons shared by the United States Edit

U.S. nuclear weapons in host countries (c. 150 total)[118]
Country Air base Custodian Warheads
  Turkey Incirlik 39th Air Base Wing 50
  Italy Aviano 31st Fighter Wing 40
Ghedi Torre 52nd Fighter Wing
  Germany Büchel 20
  Netherlands Volkel 20
  Belgium Kleine Brogel 20

Under NATO nuclear weapons sharing, the United States has provided nuclear weapons for Belgium, Germany, Italy, the Netherlands, and Turkey to deploy and store.[119] This involves pilots and other staff of the "non-nuclear" NATO states practicing, handling, and delivering the U.S. nuclear bombs, and adapting non-U.S. warplanes to deliver U.S. nuclear bombs. However, since all U.S. nuclear weapons are protected with Permissive Action Links, the host states cannot easily arm the bombs without authorization codes from the U.S. Department of Defense.[120] Former Italian President Francesco Cossiga acknowledged the presence of U.S. nuclear weapons in Italy.[121] U.S. nuclear weapons were also deployed in Canada as well as Greece from 1963 to 1984. However, Canada withdrew three of the four nuclear-capable weapons systems by 1972. The single system retained, the AIR-2 Genie, had a yield of 1.5 kilotons, was designed to strike enemy aircraft as opposed to ground targets, and might not have qualified as a weapon of mass destruction given its limited yield.[122] As of April 2019, the United States maintained around 150 nuclear weapons in Europe, as reflected in the accompanying table.[118]

Nuclear weapons shared by Russia Edit

Russian nuclear weapons in host countries
Country Air base Warheads
  Belarus Probably Lida[123] Number unknown

Since June 2023,[123] the leaders of Russia and Belarus have claimed that a "number of"[124] nuclear weapons are located on Belarusian territory while remaining in Russian possession.[123] Sources hostile to these countries have confirmed that nuclear warheads have been delivered to Belarus, but claim that the first transfers were instead made in August 2023.[125] Russia's stated intention is to provide Belarus with two delivery systems: dual-capable Iskander-M missile systems and necessary training and modifications for Belarusian Su-25 aircraft to carry nuclear weapons.[126]

The deployment of Russian weapons to Belarus was framed by Russian President Vladimir Putin as being equivalent to the deployments of American nuclear weapons to NATO Allies in Europe under international law.[124]

Criticism of nuclear weapons sharing Edit

Members of the Non-Aligned Movement have called on all countries to "refrain from nuclear sharing for military purposes under any kind of security arrangements."[127] The Institute of Strategic Studies Islamabad (ISSI) has criticized the arrangement for allegedly violating Articles I and II of the NPT, arguing that "these Articles do not permit the NWS to delegate the control of their nuclear weapons directly or indirectly to others."[128] NATO has argued that the weapons' sharing is compliant with the NPT because "the U.S. nuclear weapons based in Europe are in the sole possession and under constant and complete custody and control of the United States."[129]

States formerly possessing nuclear weapons Edit

Nuclear weapons have been present in many nations, often as staging grounds under control of other powers. However, in only one instance has a nation given up nuclear weapons after being in full control of them. The fall of the Soviet Union left several former Soviet republics in physical possession of nuclear weapons, although not operational control which was dependent on Russian-controlled electronic Permissive Action Links and the Russian command and control system.[130][131] Of these, Kazakhstan and Ukraine continue to have neither their own nuclear weapons nor another state's nuclear weapons stationed in their territory whereas Belarus does again claim to have Russian-owned nuclear weapons stationed on its territory since 2023.

 
Alleged spare bomb casings from South Africa's nuclear weapon programme. Their purpose is disputed.[132]

South Africa Edit

South Africa produced six nuclear weapons in the 1980s, but dismantled them in the early 1990s.

In 1979, there was a detection of a putative covert nuclear test in the Indian Ocean, called the Vela incident. It has long been speculated that it was a test by Israel, in collaboration with and with the support of South Africa, though this has never been confirmed. South Africa could not have constructed such a nuclear bomb until November 1979, two months after the "double flash" incident.[133]

South Africa acceded to the Nuclear Non-Proliferation Treaty in 1991.[134][135]

Former Soviet republics Edit

  • Kazakhstan had 1,400 Soviet-era nuclear weapons on its territory and transferred them all to Russia by 1995, after Kazakhstan acceded to the NPT. [136]
  • Ukraine had as many as 3,000 nuclear weapons deployed on its territory when it became independent from the Soviet Union in 1991, equivalent to the third-largest nuclear arsenal in the world.[citation needed] At the time Ukraine acceded to the NPT in December 1994, Ukraine had agreed to dispose of all nuclear weapons within its territory. The warheads were removed from Ukraine by 1996 and disassembled in Russia.[137] Despite Russia's subsequent and internationally disputed annexation of Crimea in 2014, Ukraine reaffirmed its 1994 decision to accede to the Nuclear Non-Proliferation Treaty as a non-nuclear-weapon state.[138]
  • Belarus, which since 2023 has resumed hosting Russian nuclear weapons, also had single warhead missiles stationed on its territory into the 1990s while a constituent of the Soviet Union. When the Soviet Union collapsed in 1991, 81 single warhead missiles were stationed on newly Belarusian territory, but were all transferred to Russia by 1996. Belarus was a member of the Nuclear Non-Proliferation Treaty (NPT) from May 1992[139] through February 2022, when it held a constitutional referendum resulting in the cessation of its non-nuclear status.[140]

In connection with their accession to the NPT, all three countries received assurances that their sovereignty, independence, and territorial integrity would be respected, as stated in the Budapest Memorandum on Security Assurances. This agreement has been violated by Russia since the Russo-Ukrainian War began in 2014, during which Russia annexed Crimea, occupied Eastern Ukraine, and in 2022, invaded the remainder of the country with no direct response.[141][142][143]

Stationed countries Edit

Up until the 1990s the U.S. had stationed nuclear weapons outside of its territories and sharing countries.[144]

South Korea Edit

Taiwan Edit

Taiwan was developing capacities to construct nuclear weapons up until the 1970s. During that time the United States stationed some of their arsenal in Taiwan.

Japan Edit

After World War II the U.S. had nuclear weapons stationed in Japan until the 1970s.

See also Edit

Notes Edit

  1. ^ Estimates from the Federation of American Scientists. The latest update was in January 2023. "Deployed" indicates the total of deployed strategic and non-strategic warheads. Because the number of non-strategic warheads is unknown for many countries, this number should be taken as a minimum. When a range of weapons is given (e.g., 0–10), it generally indicates that the estimate is being made on the amount of fissile material that has likely been produced, and the amount of fissile material needed per warhead depends on estimates of a country's proficiency at nuclear weapon design.
  2. ^ See also UK Trident programme. From the 1960s until the 1990s, the United Kingdom's Royal Air Force maintained the independent capability to deliver nuclear weapons via its V bomber fleet.
  3. ^ See also Force de dissuasion. France formerly possessed a nuclear triad until 1996 and the retirement of its land-based arsenal.
  4. ^ Data include the suspected Vela incident of 22 September 1979.[48]

References Edit

  1. ^ a b c d e f g h i j "World Nuclear Forces, SIPRI yearbook 2020". Stockholm International Peace Research Institute. Stockholm International Peace Research Institute. January 2020. Retrieved 18 June 2020.
  2. ^ Murdock, Clark A.; Miller, Franklin; Mackby, Jenifer (13 May 2010). "Trilateral Nuclear Dialogues Role of P3 Nuclear Weapons Consensus Statement". Center for Strategic and International Studies. Retrieved 13 May 2010.
  3. ^ Hersh, Seymour (27 October 1991). "Authors Note". The Samson Option. Random House. ISBN 978-0394570068."This is a book about how Israel became a nuclear power in secret." (First sentence, Authors' Note/Introduction, The Samson Option: Israel's Nuclear Arsenal and American Foreign Policy, Hersh)
  4. ^ a b c d e f g h "Nuclear Weapons: Who Has What at a Glance". Arms Control Association. July 2019. Retrieved 5 August 2020. India, Israel, and Pakistan never signed the NPT and possess nuclear arsenals.
  5. ^ Rosen, Armin (10 November 2014). "Israel's Nuclear Arsenal Might Be Smaller And More Strategic Than Everyone Thinks". Business Insider. from the original on 6 December 2016. Retrieved 16 January 2017. The country possesses some of the most powerful weaponry on earth, along with delivery systems that give it the ability to strike far beyond its borders.
  6. ^ "Israel". Nuclear Threat Initiative. May 2015. from the original on 16 January 2017. Retrieved 16 January 2017. While experts generally agree that Israel possesses nuclear weapons, no such current open source consensus exists on the status of Israel's offensive chemical or biological weapons programs.
  7. ^ Stover, Dawn (16 September 2016). "Does Israel really have 200 nuclear weapons, or was Colin Powell exaggerating?". Bulletin of the Atomic Scientists. from the original on 18 January 2017. Retrieved 16 January 2017. The boys in Tehran know Israel has 200, all targeted on Tehran, and we have thousands. citing primary source private email from Colin Powell to Jeffrey Leeds [1] 16 February 2017 at the Wayback Machine
  8. ^ a b Harding, Luke (12 December 2006). "Calls for Olmert to resign after nuclear gaffe Israel and the Middle East". The Guardian. London. Retrieved 15 May 2009.
  9. ^ Nuclear Forces 7 January 2015 at the Wayback Machine, Stockholm International Peace Research Institute, sipri.org
  10. ^ There are a wide range of estimates as to the size of the Israeli nuclear arsenal. For a compiled list of estimates, see Avner Cohen, The Worst-Kept Secret: Israel's bargain with the Bomb (Columbia University Press, 2010), Table 1, page xxvii and page 82.
  11. ^ a b c NTI Israel Profile 28 July 2011 at the Wayback Machine Retrieved 12 July 2007.
  12. ^ a b Avner Cohen (2010). The Worst-Kept Secret: Israel's bargain with the Bomb. Columbia University Press.
  13. ^ Arms Control and Global Security, Paul R. Viotti – 2010, p 312
  14. ^ Ahronheim, Anna (14 June 2021). "SIPRI: Number of fatalities caused by armed conflict falls in 2020". The Jerusalem Post. Retrieved 14 June 2021.
  15. ^ Reichmann, Kelsey (16 June 2019). "Here's how many nuclear warheads exist, and which countries own them". Defense News.
  16. ^ "Global Nuclear Arsenal Declines, But Future Cuts Uncertain Amid U.S.-Russia Tensions". Radio Free Europe/Radio Liberty (RFE/RL). 17 June 2019. from the original on 2 July 2019. Retrieved 23 July 2019.
  17. ^ a b "Chinese Nuclear Arsenal Grows by Seventeen Percent in 2022, SIPRI Reports". Retrieved 21 June 2023.
  18. ^ "Nuclear club", Oxford English Dictionary: "nuclear club n. the nations that possess nuclear weapons." The term's first cited usage is from 1957.
  19. ^ Jane Onyanga-Omara, "The Nuclear Club: Who are the 9 members?" 4 September 2017 at the Wayback Machine, USA TODAY, 6 January 2016
  20. ^ Webster, Paul (July/August 2003). "Nuclear weapons: how many are there in 2009 and who has them? 2017-01-08 at the Wayback Machine" The Guardian, 6 September 2009.
  21. ^ "Treaty on the Non-Proliferation of Nuclear Weapons". Retrieved 29 August 2023.
  22. ^ "Status of Signature and Ratification of the Comprehensive Test Ban Treaty". from the original on 25 September 2011. Retrieved 13 January 2012.
  23. ^ "The Nuclear Testing Tally". www.armscontrol.org. Arms Control Association. August 2022. Retrieved 14 June 2023.
  24. ^ Kristensen, Hans M.; Korda, Matt (2 January 2023). "United States nuclear weapons, 2023". Bulletin of the Atomic Scientists. 79 (1): 28–52. doi:10.1080/00963402.2022.2156686. ISSN 0096-3402.
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Bibliography Edit

  • International Institute for Strategic Studies (7 March 2012). Hackett, James (ed.). The Military Balance 2012. London, England: Routledge. ISBN 978-1857436426.
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  • Philipp C. Bleek, “When Did (and Didn’t) States Proliferate? Chronicling the Spread of Nuclear Weapons,” Discussion Paper (Cambridge, MA: Project on Managing the Atom, Belfer Center for Science and International Affairs, June 2017).

External links Edit

  • The Nuclear Weapon Archive
  • from Bulletin of the Atomic Scientists
  • U.S. Nuclear Weapons in Europe: A review of post-Cold War policy, force levels, and war planning NRDC, February 2005
  • Online NewsHour with Jim Lehrer
  • Stockholm International Peace Research Institute's data on world nuclear forces
  • Nuclear Proliferation International History Project For more on the history of nuclear proliferation see the Woodrow Wilson Center's Nuclear Proliferation International History Project website.
  • Proliferation Watch: US Intelligence Assessments of Potential Nuclear Powers, 1977–2001

list, states, with, nuclear, weapons, eight, sovereign, states, have, publicly, announced, successful, detonation, nuclear, weapons, five, considered, nuclear, weapon, states, under, terms, treaty, proliferation, nuclear, weapons, order, acquisition, nuclear, . Eight sovereign states have publicly announced successful detonation of nuclear weapons 1 Five are considered to be nuclear weapon states NWS under the terms of the Treaty on the Non Proliferation of Nuclear Weapons NPT In order of acquisition of nuclear weapons these are the United States Russia the successor of the former Soviet Union the United Kingdom France and China Of these the three NATO members the UK US and France are sometimes termed the P3 2 Map of nuclear armed states of the world NPT designated nuclear weapon states China France Russia United Kingdom United States Other states with nuclear weapons India North Korea Pakistan Other states presumed to have nuclear weapons Israel NATO or CSTO member nuclear weapons sharing states Belgium Germany Italy Netherlands Turkey Belarus States formerly possessing nuclear weapons Kazakhstan South Africa Ukraine Other states that possess nuclear weapons are India Pakistan and North Korea Since the NPT entered into force in 1970 these three states were not parties to the Treaty and have conducted overt nuclear tests North Korea had been a party to the NPT but withdrew in 2003 Israel is also generally understood to have nuclear weapons 3 4 5 6 7 but does not acknowledge it maintaining a policy of deliberate ambiguity 8 Israel is estimated to possess somewhere between 75 and 400 nuclear warheads 9 10 One possible motivation for nuclear ambiguity is deterrence with minimum political cost 11 12 States that formerly possessed nuclear weapons are South Africa developed nuclear weapons but then disassembled its arsenal before joining the NPT 13 and the former Soviet republics of Belarus Kazakhstan and Ukraine whose weapons were transferred to Russia According to Stockholm International Peace Research Institute SIPRI the worldwide total inventory of nuclear weapons as of 2021 stood at 13 080 Around 30 of these are deployed with operational forces 14 and more than 90 are owned by either Russia or the United States 15 16 In its recent research SIPRI estimated the total number of nuclear warheads acquired by nuclear states reached 12 512 in January 2023 Approximately 9 576 are kept with military stockpiles About 3 844 warheads are deployed with missiles Two thousand warheads which are primarily from Russia and United States are maintained for high operational alerts 17 Contents 1 Statistics and force configuration 2 Recognized nuclear weapon states 2 1 United States 2 2 Russia successor to the Soviet Union 2 3 United Kingdom 2 4 France 2 5 China 3 States declaring possession of nuclear weapons 3 1 India 3 2 Pakistan 3 3 North Korea 4 States indicated to possess nuclear weapons 4 1 Israel 5 Launch authority 6 Nuclear weapons sharing 6 1 Nuclear weapons shared by the United States 6 2 Nuclear weapons shared by Russia 6 3 Criticism of nuclear weapons sharing 7 States formerly possessing nuclear weapons 7 1 South Africa 7 2 Former Soviet republics 7 3 Stationed countries 7 3 1 South Korea 7 3 2 Taiwan 7 3 3 Japan 8 See also 9 Notes 10 References 11 Bibliography 12 External linksStatistics and force configuration Edit nbsp Large stockpile with global range dark blue smaller stockpile with global range medium blue small stockpile with regional range light blue The following is a list of states that have admitted the possession of nuclear weapons or are presumed to possess them the approximate number of warheads under their control and the year they tested their first weapon and their force configuration This list is informally known in global politics as the Nuclear Club 18 19 With the exception of Russia and the United States which have subjected their nuclear forces to independent verification under various treaties these figures are estimates in some cases quite unreliable estimates In particular under the Strategic Offensive Reductions Treaty thousands of Russian and U S nuclear warheads are inactive in stockpiles awaiting processing The fissile material contained in the warheads can then be recycled for use in nuclear reactors From a high of 70 300 active weapons in 1986 as of 2019 update there are approximately 3 750 active nuclear warheads and 13 890 total nuclear warheads in the world 1 Many of the decommissioned weapons were simply stored or partially dismantled not destroyed 20 It is also noteworthy that since the dawn of the Atomic Age the delivery methods of most states with nuclear weapons have evolved with some achieving a nuclear triad while others have consolidated away from land and air deterrents to submarine based forces Overview of nuclear states and their capacities Country Warheads a First Test NPT status 21 CTBT status 22 Delivery methods Tests 23 Total Deployed Date Site nbsp United States 24 5 244 1 770 16 July 1945 Trinity Alamogordo New Mexico Party Signatory Nuclear triad 25 1 030 nbsp Russia 26 5 889 1 674 29 August 1949 RDS 1 Semipalatinsk Kazakh SSR Party Ratifier 715 nbsp United Kingdom 1 27 4 225 120 3 October 1952 Hurricane Monte Bello Islands Australia Party Ratifier Sea based 28 b 45 nbsp France 1 27 29 290 280 13 February 1960 Gerboise Bleue Reggane French Algeria Party Ratifier Sea and air based 30 c 210 nbsp China 1 27 4 31 410 0 27 16 October 1964 596 Lop Nur Xinjiang Party Signatory Nuclear triad 32 33 45 nbsp India 1 27 4 34 160 0 18 May 1974 Smiling Buddha Pokhran Rajasthan Non Party Non signatory Nuclear triad 35 36 37 38 3 nbsp Pakistan 1 4 39 165 0 28 May 1998 Chagai 1 Ras Koh Hills Balochistan Non Party Non signatory Nuclear triad 40 41 2 nbsp North Korea 1 27 4 42 30 0 9 October 2006 43 Kilju North Hamgyong Announced Withdrawal 44 Non signatory Land and sea based 45 6 nbsp Israel 1 4 46 90 1 4 0 1960 1979 47 d Unknown Non Party Signatory Suspected nuclear triad 49 50 UnknownRecognized nuclear weapon states EditSee also History of nuclear weapons These five states are known to have detonated a nuclear explosive before 1 January 1967 and are thus nuclear weapons states under the Treaty on the Non Proliferation of Nuclear Weapons They also happen to be the UN Security Council s UNSC permanent members with veto power on UNSC resolutions United States Edit Main articles Nuclear weapons of the United States and United States and weapons of mass destructionSee also Manhattan Project nbsp An early stage in the Trinity fireball the first nuclear explosion 1945The United States developed the first nuclear weapons during World War II in cooperation with the United Kingdom and Canada as part of the Manhattan Project out of the fear that Nazi Germany would develop them first It tested the first nuclear weapon on 16 July 1945 Trinity at 5 30 am and remains the only country to have used nuclear weapons in war devastating the Japanese cities of Hiroshima and Nagasaki The project expenditure through 1 October 1945 was reportedly 1 845 2 billion in nominal terms 51 52 roughly 0 8 percent of the US GDP in 1945 and equivalent to about 29 billion in 2020 money 53 It was the first nation to develop the hydrogen bomb testing an experimental prototype in 1952 Ivy Mike and a deployable weapon in 1954 Castle Bravo Throughout the Cold War it continued to modernize and enlarge its nuclear arsenal but from 1992 on has been involved primarily in a program of stockpile stewardship 54 55 56 57 The U S nuclear arsenal contained 31 175 warheads at its Cold War height in 1966 58 During the Cold War the United States built approximately 70 000 nuclear warheads more than all other nuclear weapon states combined 59 60 Russia successor to the Soviet Union Edit Main articles Russia and weapons of mass destruction and Strategic Rocket Forces See also Soviet atomic bomb project nbsp U S and USSR Russian nuclear weapons stockpiles 1945 2014The Soviet Union tested its first nuclear weapon RDS 1 in 1949 This crash project was developed partially with information obtained via espionage during and after World War II The Soviet Union was the second nation to have developed and tested a nuclear weapon The direct motivation for Soviet weapons development was to achieve a balance of power during the Cold War It tested its first megaton range hydrogen bomb RDS 37 in 1955 The Soviet Union also tested the most powerful explosive ever detonated by humans Tsar Bomba with a theoretical yield of 100 megatons intentionally reduced to 50 when detonated After its dissolution in 1991 the Soviet weapons entered officially into the possession of the Russian Federation 61 The Soviet nuclear arsenal contained some 45 000 warheads at its peak in 1986 the Soviet Union built about 55 000 nuclear warheads since 1949 60 United Kingdom Edit Main articles Nuclear weapons of the United Kingdom and United Kingdom and weapons of mass destruction See also Tube Alloys British contribution to the Manhattan Project High Explosive Research and British hydrogen bomb programme nbsp A Trident missile launched from a Royal Navy Vanguard class ballistic missile submarineThe United Kingdom tested its first nuclear weapon Hurricane in 1952 The UK had provided considerable impetus and initial research for the early conception of the atomic bomb aided by Austrian German and Polish physicists working at British universities who had either fled or decided not to return to Nazi Germany or Nazi controlled territories The UK collaborated closely with the United States and Canada during the Manhattan Project but had to develop its own method for manufacturing and detonating a bomb as U S secrecy grew after 1945 The United Kingdom was the third country in the world after the United States and the Soviet Union to develop and test a nuclear weapon Its programme was motivated to have an independent deterrent against the Soviet Union while also maintaining its status as a great power It tested its first hydrogen bomb in 1957 Operation Grapple making it the third country to do so after the United States and Soviet Union 62 63 The British Armed Forces maintained a fleet of V bomber strategic bombers and ballistic missile submarines SSBNs equipped with nuclear weapons during the Cold War The Royal Navy currently maintains a fleet of four Vanguard class ballistic missile submarines equipped with Trident II missiles In 2016 the UK House of Commons voted to renew the British nuclear weapons system with the Dreadnought class submarine without setting a date for the commencement of service of a replacement to the current system France Edit Main articles France and weapons of mass destruction and Force de dissuasion nbsp French nuclear powered aircraft carrier Charles de Gaulle right and the American nuclear powered carrier USS Enterprise left each of which carries nuclear capable warplanesFrance tested its first nuclear weapon in 1960 Gerboise Bleue based mostly on its own research It was motivated by the Suez Crisis diplomatic tension in relation to both the Soviet Union and its allies the United States and United Kingdom It was also relevant to retain great power status alongside the United Kingdom during the post colonial Cold War see Force de frappe France tested its first hydrogen bomb in 1968 Operation Canopus After the Cold War France has disarmed 175 warheads with the reduction and modernization of its arsenal that has now evolved to a dual system based on submarine launched ballistic missiles SLBMs and medium range air to surface missiles Rafale fighter bombers However new nuclear weapons are in development and reformed nuclear squadrons were trained during Enduring Freedom operations in Afghanistan citation needed France acceded to the Nuclear Non Proliferation Treaty in 1992 64 In January 2006 President Jacques Chirac stated a terrorist act or the use of weapons of mass destruction against France would result in a nuclear counterattack 65 In February 2015 President Francois Hollande stressed the need for a nuclear deterrent in a dangerous world He also detailed the French deterrent as fewer than 300 nuclear warheads three sets of 16 submarine launched ballistic missiles and 54 medium range air to surface missiles and urged other states to show similar transparency 66 China Edit Main articles China and weapons of mass destruction and People s Liberation Army Rocket Force nbsp Mushroom cloud from China s first nuclear test Project 596China tested its first nuclear weapon device 596 in 1964 at the Lop Nur test site The weapon was developed as a deterrent against both the United States and the Soviet Union Two years later China had a fission bomb capable of being put onto a nuclear missile It tested its first hydrogen bomb Test No 6 in 1967 32 months after testing its first nuclear weapon the shortest fission to fusion development known in history 67 China is the only NPT nuclear weapon state to give an unqualified negative security assurance with its no first use policy 68 69 China acceded to the Nuclear Non Proliferation Treaty in 1992 64 As of 2016 China fielded SLBMs onboard its JL 2 submarines 70 As of May 2021 China had an estimated total inventory of 350 warheads 71 The Yearbook published by Stockholm International Peace Research Institute SIPRI in 2023 revealed that China s nuclear warheads stockpile increased by 17 in 2022 reaching 410 warheads 17 States declaring possession of nuclear weapons EditIndia Edit Main article India and weapons of mass destruction nbsp Agni V during its first test flight on 19 April 2012India is not a party to the Nuclear Non Proliferation Treaty Indian officials rejected the NPT in the 1960s on the grounds that it created a world of nuclear haves and have nots arguing that it unnecessarily restricted peaceful activity including peaceful nuclear explosives and that India would not accede to international control of their nuclear facilities unless all other countries engaged in unilateral disarmament of their own nuclear weapons The Indian position has also asserted that the NPT is in many ways a neo colonial regime designed to deny security to post colonial powers 72 The country tested what is called a peaceful nuclear explosive in 1974 which became known as Smiling Buddha The test was the first test developed after the creation of the NPT and created new questions about how civilian nuclear technology could be diverted secretly to weapons purposes dual use technology India s secret development caused great concern and anger particularly from nations that had supplied its nuclear reactors for peaceful and power generating needs such as Canada 73 After its 1974 test India maintained that its nuclear capability was primarily peaceful but between 1988 and 1990 it apparently weaponized two dozen nuclear weapons for delivery by air 74 In 1998 India tested weaponized nuclear warheads Operation Shakti including a thermonuclear device 75 India adopted a no first use policy in 1998 76 In July 2005 U S President George W Bush and Indian Prime Minister Manmohan Singh announced a civil nuclear cooperation initiative 77 that included plans to conclude an Indo US civilian nuclear agreement This initiative came to fruition through a series of steps that included India s announced plan to separate its civil and military nuclear programs in March 2006 78 the passage of the India United States Civil Nuclear Agreement by the U S Congress in December 2006 the conclusion of a U S India nuclear cooperation agreement in July 2007 79 approval by the IAEA of an India specific safeguards agreement 80 agreement by the Nuclear Suppliers Group to a waiver of export restrictions for India 81 approval by the U S Congress 82 and culminating in the signature of U S India agreement for civil nuclear cooperation 83 in October 2008 The U S State Department said it made it very clear that we will not recognize India as a nuclear weapon state 84 The United States is bound by the Hyde Act with India and may cease all cooperation with India if India detonates a nuclear explosive device The US had further said it is not its intention to assist India in the design construction or operation of sensitive nuclear technologies through the transfer of dual use items 85 In establishing an exemption for India the Nuclear Suppliers Group reserved the right to consult on any future issues which might trouble it 86 As of May 2021 India was estimated to have a stockpile of around 160 warheads 87 Pakistan Edit Main article Pakistan and weapons of mass destruction nbsp Debris erupts from a mountain during an underground nuclear weapon detonation carried out as part of Pakistan s Chaghai I series of tests Pakistan is also not a party to the Nuclear Non Proliferation Treaty Pakistan covertly developed nuclear weapons over decades beginning in the late 1970s Pakistan first delved into nuclear power after the establishment of its first nuclear power plant near Karachi with equipment and materials supplied mainly by western nations in the early 1970s Pakistani Prime Minister Zulfiqar Ali Bhutto promised in 1971 that if India could build nuclear weapons then Pakistan would too according to him We will develop Nuclear stockpiles even if we have to eat grass 88 It is believed that Pakistan has possessed nuclear weapons since the mid 1980s 89 The United States continued to certify that Pakistan did not possess such weapons until 1990 when sanctions were imposed under the Pressler Amendment requiring a cutoff of U S economic and military assistance to Pakistan 90 In 1998 Pakistan conducted its first six nuclear tests at the Ras Koh Hills in response to the five tests conducted by India a few weeks before In 2004 the Pakistani metallurgist Abdul Qadeer Khan a key figure in Pakistan s nuclear weapons program confessed to heading an international black market ring involved in selling nuclear weapons technology In particular Khan had been selling gas centrifuge technology to North Korea Iran and Libya Khan denied complicity by the Pakistani government or Army but this has been called into question by journalists and IAEA officials and was later contradicted by statements from Khan himself 91 As of early 2013 Pakistan was estimated to have had a stockpile of around 140 warheads 92 and in November 2014 it was projected that by 2020 Pakistan would have enough fissile material for 200 warheads 93 North Korea Edit Main article North Korea and weapons of mass destruction North Korea was a party to the Nuclear Non Proliferation Treaty but announced a withdrawal on 10 January 2003 after the United States accused it of having a secret uranium enrichment program and cut off energy assistance under the 1994 Agreed Framework In February 2005 North Korea claimed to possess functional nuclear weapons though their lack of a test at the time led many experts to doubt the claim In October 2006 North Korea stated that in response to growing intimidation by the United States it would conduct a nuclear test to confirm its nuclear status North Korea reported a successful nuclear test on 9 October 2006 see 2006 North Korean nuclear test Most U S intelligence officials believed that the test was probably only partially successful with a yield of less than a kiloton 94 95 North Korea conducted a second higher yield test on 25 May 2009 see 2009 North Korean nuclear test and a third test with still higher yield on 12 February 2013 see 2013 North Korean nuclear test North Korea claimed to have conducted its first hydrogen bomb test on 5 January 2016 though measurements of seismic disturbances indicate that the detonation was not consistent with a hydrogen bomb 96 On 3 September 2017 North Korea detonated a device which caused a magnitude 6 1 tremor consistent with a low powered thermonuclear detonation NORSAR estimates the yield at 250 kilotons 97 of TNT In 2018 North Korea announced a halt in nuclear weapons tests and made a conditional commitment to denuclearisation of the Korean Peninsula 98 99 however in December 2019 it indicated it no longer considered itself bound by the moratorium 100 Kim Jong un officially declared North Korea a nuclear weapons state during a speech on 9 September 2022 the country s foundation day 101 States indicated to possess nuclear weapons EditIsrael Edit Main articles Nuclear weapons and Israel and Israel and weapons of mass destruction Israel is widely believed to have been the sixth country in the world to develop nuclear weapons but it has not acknowledged its nuclear forces It had rudimentary but deliverable nuclear weapons available as early as 1966 102 103 104 105 106 107 11 Israel is not a party to the NPT Israel engages in strategic ambiguity saying it would not be the first country to introduce nuclear weapons into the region but refusing to otherwise confirm or deny a nuclear weapons program or arsenal This policy of nuclear opacity has been interpreted as an attempt to get the benefits of deterrence with a minimal political cost 11 12 Due to a US ban on funding countries that have weapons of mass destruction Israel would lose around 2 billion a year in military and other aid from the US if it admitted to possessing nuclear weapons 8 According to the Natural Resources Defense Council and the Federation of American Scientists Israel likely possesses around 80 400 nuclear weapons 108 109 The Stockholm International Peace Research Institute estimates that Israel has approximately 80 intact nuclear weapons of which 50 are for delivery by Jericho II medium range ballistic missiles and 30 are gravity bombs for delivery by aircraft SIPRI also reports that there was renewed speculation in 2012 that Israel may also have developed nuclear capable submarine launched cruise missiles 110 Launch authority EditThe decision to use nuclear weapons is always restricted to a single person or small group of people The United States and France require their respective presidents to approve the use of nuclear weapons In the US the Presidential Emergency Satchel is always handled by a nearby aide unless the President is near a command center The decision rests with the Prime Minister in the United Kingdom Information from China is unclear but the launch of nuclear weapons is commonly believed to rest with the Central Military Commission of the Chinese Communist Party Russia grants such power to the President but may also require approval from the Minister of Defence and the Chief of the General Staff The Supreme Commander of the Armed Forces has authority in North Korea India Pakistan and Israel have committees for such a decision 111 Some countries are known to have delegated launch authority to military personnel in the event that the usual launch authority is incapacitated whether or not the pre delegated authority exists at any particular time is kept secret 112 In the United States some military commanders have been delegated authority to launch nuclear weapons when the urgency of time and circumstances clearly does not permit a specific decision by the President Russia has a semi automated Dead Hand system which may allow military commanders to act based on certain pre defined criteria British nuclear armed submarine commanders are issued with Letters of last resort written by the Prime Minister containing secret instructions which may or may not give them delegated launch authority 113 Launch authority of nuclear states Country Authority Notes nbsp United States President of the United States See the Presidential Emergency Satchel 111 114 nbsp Russia President of Russia Briefcases may also be issued to the Minister of Defence and the Chief of the General Staff 111 115 116 114 nbsp United Kingdom Prime Minister of the United Kingdom The Prime Minister and a secretly designated second may order a launch but this may be challenged by Parliament 111 114 nbsp France President of France The Chief of the Military Staff of the President of the Republic and the Chief of the Defence Staff may also be involved in decisions 111 114 nbsp China Central Military Commission The Chairman of the Central Military Commission is the Supreme Military Commander 111 114 nbsp India Prime Minister of India Nuclear Command Authority includes an Executive Council and a Political Council 111 114 nbsp Pakistan National Command Authority Requires a consensus of the council s members 111 114 nbsp North Korea President of the State Affairs The president of the State Affairs is the ultimate decisionmaker in regards to North Korea s nuclear arsenal 117 nbsp Israel Prime Minister of Israel Requires agreement of the Minister of Defense and Chief of the General Staff 111 Nuclear weapons sharing EditMain article Nuclear sharing See also Germany and weapons of mass destruction Italian nuclear weapons program and Netherlands and weapons of mass destruction Nuclear weapons shared by the United States Edit U S nuclear weapons in host countries c 150 total 118 Country Air base Custodian Warheads nbsp Turkey Incirlik 39th Air Base Wing 50 nbsp Italy Aviano 31st Fighter Wing 40Ghedi Torre 52nd Fighter Wing nbsp Germany Buchel 20 nbsp Netherlands Volkel 20 nbsp Belgium Kleine Brogel 20Under NATO nuclear weapons sharing the United States has provided nuclear weapons for Belgium Germany Italy the Netherlands and Turkey to deploy and store 119 This involves pilots and other staff of the non nuclear NATO states practicing handling and delivering the U S nuclear bombs and adapting non U S warplanes to deliver U S nuclear bombs However since all U S nuclear weapons are protected with Permissive Action Links the host states cannot easily arm the bombs without authorization codes from the U S Department of Defense 120 Former Italian President Francesco Cossiga acknowledged the presence of U S nuclear weapons in Italy 121 U S nuclear weapons were also deployed in Canada as well as Greece from 1963 to 1984 However Canada withdrew three of the four nuclear capable weapons systems by 1972 The single system retained the AIR 2 Genie had a yield of 1 5 kilotons was designed to strike enemy aircraft as opposed to ground targets and might not have qualified as a weapon of mass destruction given its limited yield 122 As of April 2019 update the United States maintained around 150 nuclear weapons in Europe as reflected in the accompanying table 118 Nuclear weapons shared by Russia Edit Russian nuclear weapons in host countries Country Air base Warheads nbsp Belarus Probably Lida 123 Number unknownSince June 2023 update 123 the leaders of Russia and Belarus have claimed that a number of 124 nuclear weapons are located on Belarusian territory while remaining in Russian possession 123 Sources hostile to these countries have confirmed that nuclear warheads have been delivered to Belarus but claim that the first transfers were instead made in August 2023 125 Russia s stated intention is to provide Belarus with two delivery systems dual capable Iskander M missile systems and necessary training and modifications for Belarusian Su 25 aircraft to carry nuclear weapons 126 The deployment of Russian weapons to Belarus was framed by Russian President Vladimir Putin as being equivalent to the deployments of American nuclear weapons to NATO Allies in Europe under international law 124 Criticism of nuclear weapons sharing Edit Members of the Non Aligned Movement have called on all countries to refrain from nuclear sharing for military purposes under any kind of security arrangements 127 The Institute of Strategic Studies Islamabad ISSI has criticized the arrangement for allegedly violating Articles I and II of the NPT arguing that these Articles do not permit the NWS to delegate the control of their nuclear weapons directly or indirectly to others 128 NATO has argued that the weapons sharing is compliant with the NPT because the U S nuclear weapons based in Europe are in the sole possession and under constant and complete custody and control of the United States 129 States formerly possessing nuclear weapons EditNuclear weapons have been present in many nations often as staging grounds under control of other powers However in only one instance has a nation given up nuclear weapons after being in full control of them The fall of the Soviet Union left several former Soviet republics in physical possession of nuclear weapons although not operational control which was dependent on Russian controlled electronic Permissive Action Links and the Russian command and control system 130 131 Of these Kazakhstan and Ukraine continue to have neither their own nuclear weapons nor another state s nuclear weapons stationed in their territory whereas Belarus does again claim to have Russian owned nuclear weapons stationed on its territory since 2023 nbsp Alleged spare bomb casings from South Africa s nuclear weapon programme Their purpose is disputed 132 South Africa Edit Main articles South Africa and weapons of mass destruction and Nuclear programme of South Africa South Africa produced six nuclear weapons in the 1980s but dismantled them in the early 1990s In 1979 there was a detection of a putative covert nuclear test in the Indian Ocean called the Vela incident It has long been speculated that it was a test by Israel in collaboration with and with the support of South Africa though this has never been confirmed South Africa could not have constructed such a nuclear bomb until November 1979 two months after the double flash incident 133 South Africa acceded to the Nuclear Non Proliferation Treaty in 1991 134 135 Former Soviet republics Edit See also Ukraine and weapons of mass destruction Kazakhstan had 1 400 Soviet era nuclear weapons on its territory and transferred them all to Russia by 1995 after Kazakhstan acceded to the NPT 136 Ukraine had as many as 3 000 nuclear weapons deployed on its territory when it became independent from the Soviet Union in 1991 equivalent to the third largest nuclear arsenal in the world citation needed At the time Ukraine acceded to the NPT in December 1994 Ukraine had agreed to dispose of all nuclear weapons within its territory The warheads were removed from Ukraine by 1996 and disassembled in Russia 137 Despite Russia s subsequent and internationally disputed annexation of Crimea in 2014 Ukraine reaffirmed its 1994 decision to accede to the Nuclear Non Proliferation Treaty as a non nuclear weapon state 138 Belarus which since 2023 has resumed hosting Russian nuclear weapons also had single warhead missiles stationed on its territory into the 1990s while a constituent of the Soviet Union When the Soviet Union collapsed in 1991 81 single warhead missiles were stationed on newly Belarusian territory but were all transferred to Russia by 1996 Belarus was a member of the Nuclear Non Proliferation Treaty NPT from May 1992 139 through February 2022 when it held a constitutional referendum resulting in the cessation of its non nuclear status 140 In connection with their accession to the NPT all three countries received assurances that their sovereignty independence and territorial integrity would be respected as stated in the Budapest Memorandum on Security Assurances This agreement has been violated by Russia since the Russo Ukrainian War began in 2014 during which Russia annexed Crimea occupied Eastern Ukraine and in 2022 invaded the remainder of the country with no direct response 141 142 143 Stationed countries Edit Up until the 1990s the U S had stationed nuclear weapons outside of its territories and sharing countries 144 South Korea Edit Main article South Korea and weapons of mass destruction Taiwan Edit Main articles Taiwan and weapons of mass destruction and Timeline of the Republic of China s nuclear program Taiwan was developing capacities to construct nuclear weapons up until the 1970s During that time the United States stationed some of their arsenal in Taiwan Japan Edit Main article United States nuclear weapons in Japan After World War II the U S had nuclear weapons stationed in Japan until the 1970s See also EditComprehensive Nuclear Test Ban Treaty Doomsday Clock Historical nuclear weapons stockpiles and nuclear tests by country International Campaign to Abolish Nuclear Weapons No first use Nuclear disarmament Nuclear latency Nuclear power Nuclear program of Iran Nuclear proliferation Nuclear terrorism Nuclear warfare Nuclear weapon free zoneNotes Edit Estimates from the Federation of American Scientists The latest update was in January 2023 Deployed indicates the total of deployed strategic and non strategic warheads Because the number of non strategic warheads is unknown for many countries this number should be taken as a minimum When a range of weapons is given e g 0 10 it generally indicates that the estimate is being made on the amount of fissile material that has likely been produced and the amount of fissile material needed per warhead depends on estimates of a country s proficiency at nuclear weapon design See also UK Trident programme From the 1960s until the 1990s the United Kingdom s Royal Air Force maintained the independent capability to deliver nuclear 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