List of states with nuclear weapons


List of states with nuclear weapons
Map of nuclear weapons countries of the world.
  NPT nuclear-weapon States (China, France, Russia, UK, USA)
  Other States with nuclear weapons (India, Pakistan, North Korea)
  Other States believed to have nuclear weapons (Israel)
  NATO nuclear weapons sharing states
  States suspected of having a nuclear weapons program (Iran, Syria)
  States formerly possessing nuclear weapons (Belarus, Kazakhstan, Ukraine, South Africa)

There are currently eight states that have successfully detonated nuclear weapons. Five are considered to be "nuclear-weapon states" (NWS) under the terms of the Nuclear Non-Proliferation Treaty (NPT). In order of acquisition of nuclear weapons these are: the United States, Russia (successor state to the Soviet Union), the United Kingdom, France, and China. Nations that are known or believed to possess nuclear weapons are sometimes referred to as the nuclear club.

Since the NPT entered into force in 1970, three states that were not parties to the Treaty have conducted nuclear tests, namely India, Pakistan, and North Korea. North Korea had been a party to the NPT but withdrew in 2003. Israel is also widely believed to have nuclear weapons, though it has refused to confirm or deny this, and is not known to have conducted a nuclear test.[1]

South Africa has the unique status of a nation that developed nuclear weapons but has since disassembled its arsenal before joining the NPT.

Contents

Statistics

The following is a list of states that have admitted the possession of nuclear weapons, the approximate number of warheads under their control, and the year they tested their first weapon. This list is informally known in global politics as the "Nuclear Club." 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. Also, these figures represent total warheads possessed, rather than deployed. In particular, under the SORT treaty thousands of Russian and U.S. nuclear warheads are in inactive stockpiles awaiting processing. The fissile material contained in the warheads can then be recycled for use in nuclear reactors.

From a high of 65,000 active weapons in 1985, there are now nearly 8,000 active nuclear warheads and more than 22,000 total nuclear warheads in the world in 2010. Many of the decommissioned weapons were simply stored or partially dismantled, not destroyed.[2] As of 2009, the total number was expected to continue to decline by 30%–50% over the next decade.[citation needed]

Country Warheads active/total[nb 1] Year of first test CTBT status
The five nuclear-weapon states under the NPT
United States United States 1,950 / 8,500[3] 1945 ("Trinity") Signatory
Russia Russia (former  Soviet Union) 2,430 / 11,000[3] 1949 ("RDS-1") Ratifier
United Kingdom United Kingdom 160 / 225[3] 1952 ("Hurricane") Ratifier
France France 290 / 300[3] 1960 ("Gerboise Bleue") Ratifier
China China ~180 / 240[3] 1964 ("596") Signatory
Non-NPT nuclear powers
India India n.a. / 80–100[3] 1974 ("Smiling Buddha") Non-signatory
Pakistan Pakistan n.a. / 90–110[3] 1998 ("Chagai-I") Non-signatory
North Korea North Korea n.a. / <10[3] 2006 (2006 test) Non-signatory
Undeclared nuclear powers
Israel Israel n.a. / 80[3] possibly 1979 (See Vela Incident) Signatory

Five nuclear-weapon states under the NPT

An early stage in the "Trinity" fireball, the first nuclear explosion, 1945.
U.S. and USSR/Russian nuclear weapons stockpiles, 1945–2006.
French nuclear-powered aircraft carrier Charles de Gaulle (right) and the American nuclear-powered carrier USS Enterprise (left), each of which carries nuclear-capable fighter aircraft
The United States developed the first atomic weapons during World War II in co-operation 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 in 1945 ("Trinity"), and remains the only country to have used nuclear weapons against another nation, during the atomic bombings of Hiroshima and Nagasaki. It was the first nation to develop the hydrogen bomb, testing an experimental version 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.[4][5][6] At its Cold War height, the US nuclear arsenal is estimated to have contained over 32,000 warheads (in 1966).[7]
The Soviet Union tested its first nuclear weapon ("Joe-1") in 1949, in a crash project developed partially with espionage obtained during and after World War II (see: Soviet atomic bomb project). The USSR was the second nation to have developed and tested a nuclear weapon. The direct motivation for their 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.[8] At its maximum, the Soviet nuclear arsenal is estimated to have contained some 45,000 warheads (in 1988).[7]
The United Kingdom tested its first nuclear weapon ("Hurricane") in 1952, drawing largely on data gained while collaborating with the United States during the Manhattan Project. The United Kingdom was the third country in the world after the USA and USSR to develop and test a nuclear weapon. Its programme was motivated to have an independent deterrent against the USSR, 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 USA and USSR.[9][10] The UK maintained a fleet of V-bomber strategic bombers and ballistic missile submarines (SSBNs) equipped with nuclear weapons during the Cold War. It currently maintains a fleet of four 'Vanguard' class ballistic missile submarines equipped with Trident II SLBMs. The British government announced a replacement to the current system to take place between 2007-2024.
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 vis-à-vis both the USSR and the Free World allies 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. 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.[11]
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. China would manage to develop a fission bomb capable of being put onto a nuclear missile only two years after its first detonation. It tested its first hydrogen bomb ("Test No. 6") in 1967, a mere 32 months after testing its first nuclear weapon (the shortest fission-to-fusion development known in history).[12] The country is currently thought to have had a stockpile of around 240 warheads, though because of the limited information available, estimates range from 100 to 400.[13][14][15] China is the only NPT nuclear-weapon state to give an unqualified negative security assurance due to its "no first use" policy.[16]

Other states declaring they have nuclear weapons

Large stockpile with global range (dark blue), smaller stockpile with global range (medium blue), small stockpile with regional range (pale blue).
India is not a Party to the Nuclear Non-Proliferation Treaty. India tested what it 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, such as Canada, that had supplied it nuclear reactors for peaceful and power generating needs. It appears to have been primarily motivated as a general deterrent, as well as an attempt to project India as a regional power.
Though India maintained that its nuclear capability was primarily "peaceful", it apparently weaponized two dozen nuclear weapons for delivery by air between 1988 and 1990.[17] But it was not until 1998 that India tested weaponized nuclear warheads ("Operation Shakti"), including a thermonuclear device.[18]
In July 2005, U.S. President George W. Bush and Indian Prime Minister Manmohan Singh announced plans to conclude an Indo-US civilian nuclear agreement.[19] This 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,[20] the passage of the United States-India Peaceful Atomic Energy Cooperation Act by the U.S. Congress in December 2006, the conclusion of a U.S.-India nuclear cooperation agreement in July 2007,[21] approval by the IAEA of an India-specific safeguards agreement,[22] agreement by the Nuclear Suppliers Group to a waiver of export restrictions for India,[23] approval by the U.S. Congress[24] and culminating in the signature of U.S.-India agreement for civil nuclear cooperation[25] 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".[26] 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.[27] In establishing an exemption for India, the Nuclear Suppliers Group reserved the right to consult on any future issues which might trouble it.[28] As of June 2011, India was estimated to have had a stockpile of around 80–100 warheads.[3]
Pakistan also is not a Party to the Nuclear Non-Proliferation Treaty. Pakistan covertly developed nuclear weapons over many 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 1965 that if India can build nuclear weapons then Pakistan would too, "even if we have to eat grass." The United States continued to certify that Pakistan did not possess nuclear weapons until 1990, when sanctions were imposed under the Pressler Amendment, requiring a cutoff of U.S. economic and military assistance to Pakistan.[29] In 1998, Pakistan conducted its first six nuclear tests at the Chagai Hills, in response to the five tests conducted by India a few weeks before. Over the years, Pakistan has developed into a crucial nuclear power.
In 2004, the Pakistani metallurgist A.Q. 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.[30]
North Korea was a Party to the Nuclear Non-Proliferation Treaty, but announced a withdrawal on January 10, 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 the North Koreans claimed to possess functional nuclear weapons, though their lack of a test at the time led many experts to doubt the claim. However, in October 2006, North Korea stated that due to growing intimidation by the USA, it would conduct a nuclear test to confirm its nuclear status. North Korea reported a successful nuclear test on October 9, 2006 (see 2006 North Korean nuclear test). Most U.S. intelligence officials believe that North Korea did, in fact, test a nuclear device due to radioactive isotopes detected by U.S. aircraft; however, most agree that the test was probably only partially successful.[31] The yield may have been less than a kiloton, which is much smaller than the first successful tests of other powers; however, boosted fission weapons may have an unboosted yield in this range, which is sufficient to start deuterium-tritium fusion in the boost gas at the center; the fast neutrons from fusion then ensure a full fission yield. North Korea conducted a second, higher yield test on May 25, 2009 (see 2009 North Korean nuclear test).

Other states believed to have nuclear weapons

On October 5, 1986, the British newspaper The Sunday Times ran Mordechai Vanunu's story on its front page under the headline: "Revealed – the secrets of Israel's nuclear arsenal."
Israel is not a party to the Nuclear Non-Proliferation Treaty and refuses to officially confirm or deny having a nuclear arsenal, or having developed nuclear weapons, or even having a nuclear weapons program. Israel has pledged not to be the first country to introduce nuclear weapons into the region, but is also pursuing a policy of strategic ambiguity with regard to their possession. This is sometimes called a policy of "nuclear opacity": Israel neither confirms nor denies that it possesses nuclear weapons, in what has been interpreted as an attempt to get the benefits of deterrence with a minimum political cost.[32] In the late 1960s, Israeli Ambassador to the US Yitzhak Rabin informed the United States State Department, that its understanding of "introducing" such weapons meant that they would be tested and publicly declared, while merely possessing the weapons did not constitute "introducing" them.[33] Israel claims that the Negev Nuclear Research Center near Dimona is a research center. However, there is extensive evidence Israel has nuclear weapons or a near-ready nuclear weapons capability. Extensive information about the program in Dimona was also disclosed by technician Mordechai Vanunu in 1986.[34]
According to the Natural Resources Defense Council and the Federation of American Scientists, Israel likely possesses around 75–200 weapons.[35][36] Imagery analysts can identify weapon bunkers, mobile missile launchers, and launch sites in satellite photographs.[citation needed] Israel may have tested a nuclear weapon along with South Africa in 1979, but this has never been confirmed, and interpretation of the evidence is controversial (see Vela Incident).


Nuclear weapons sharing

     Nuclear weapons states      Nuclear sharing states      Nuclear-Weapon-Free Zones      None of the above, but party to NPT

Under NATO nuclear weapons sharing, the United States has provided nuclear weapons for Belgium,[37] Germany,[37] Italy, the Netherlands,[37] and Turkey[37] to deploy and store.[38] 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. U.S. nuclear weapons were also deployed in Canada until 1984, South Korea until 1991, and in Greece until 2001 for nuclear sharing purposes.[39] 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."[40] 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."[41] 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."[42]

States formerly possessing nuclear weapons

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 control of them; in most cases this has been because of special political circumstances. The fall of the USSR, for example, left several former Soviet republics in possession of nuclear weapons.

Spare bomb casings from South Africa's nuclear weapon program
South Africa produced six nuclear weapons in the 1980s, but disassembled them in the early 1990s. In 1979, there was a putative detection of a clandestine nuclear test in the Indian Ocean, and it has long been speculated that it was possibly a test by South Africa, perhaps in collaboration with Israel, though this has never been confirmed (see Vela Incident). South Africa signed the Nuclear Non-Proliferation Treaty in 1991.[43]

Former Soviet countries

  •  Belarus had 81 single warhead missiles stationed on its territory after the Soviet Union collapsed in 1991. They were all transferred to Russia by 1996. Belarus has signed the Nuclear Non-Proliferation Treaty.[44]
  •  Kazakhstan inherited 1,400 nuclear weapons from the Soviet Union, and transferred them all to Russia by 1995. Kazakhstan has signed the Nuclear Non-Proliferation Treaty.[45]
  •  Ukraine has signed the Nuclear Non-Proliferation Treaty. Ukraine inherited about 5,000 nuclear weapons when it became independent from the USSR in 1991, making its nuclear arsenal the third-largest in the world.[46] By 1996, Ukraine had voluntarily disposed of all nuclear weapons within its territory, transferring them to Russia.[47]

See also

Nuclear weapons
Fat man.jpg

History
Warfare
Arms race
Design
Testing
Effects
Delivery
Espionage
Proliferation
Arsenals
Terrorism
Anti-nuclear opposition

Nuclear-armed states

United States · Russia
United Kingdom · France
China · India · Israel
Pakistan · North Korea
South Africa (former)

v · d · e

Notes

  1. ^ All numbers are estimates from the Natural Resources Defense Council, published in the Bulletin of the Atomic Scientists, unless other references are given. The latest update was on February 19, 2011. If differences between active and total stockpile are known, they are given as two figures separated by a forward slash. If specifics are not available (n.a.), only one figure is given. Stockpile number may not contain all intact warheads if a substantial amount of warheads are scheduled for but have not yet gone through dismantlement; not all "active" warheads are deployed at any given time. 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.

References

  1. ^ Harding, Luke (2006-12-12). "Calls for Olmert to resign after nuclear gaffe Israel and the Middle East | Guardian Unlimited". London: Guardian. http://www.guardian.co.uk/israel/Story/0,,1970616,00.html. Retrieved 2009-05-15. 
  2. ^ Webster, Paul (July/August 2003). "[1]," The Guardian.
  3. ^ a b c d e f g h i j "Federation of American Scientists: Status of World Nuclear Forces". Fas.org. http://www.fas.org/programs/ssp/nukes/nuclearweapons/nukestatus.html. Retrieved 2010-05-04. 
  4. ^ Hansen, Chuck (1988). U.S. nuclear weapons: The secret history. Arlington, TX: Aerofax. ISBN 0-517-56740-7. 
  5. ^ Hansen, Chuck (1995). The Swords of Armageddon: U.S. nuclear weapons development since 1945. Sunnyvale, CA: Chukelea Publications. http://www.uscoldwar.com/. 
  6. ^ Stephen I. Schwartz, ed., Atomic Audit: The Costs and Consequences of U.S. Nuclear Weapons Since 1940 (Washington, D.C.: Brookings Institution Press, 1998).
  7. ^ a b Robert S. Norris and Hans M. Kristensen, "Global nuclear stockpiles, 1945-2006," Bulletin of the Atomic Scientists 62, no. 4 (July/August 2006), 64-66.
  8. ^ Holloway, David (1994). Stalin and the bomb: The Soviet Union and atomic energy, 1939-1956. New Haven, CT: Yale University Press. ISBN 0-300-06056-4. 
  9. ^ Gowing, Margaret (1974). Independence and deterrence: Britain and atomic energy, 1945-1952. London: Macmillan. ISBN 0333157818. 
  10. ^ Arnold, Lorna (2001). Britain and the H-bomb. Basingstoke: Palgrave. ISBN 0312235186. 
  11. ^ France 'would use nuclear arms' (BBC, January 2006)
  12. ^ John Wilson Lewis and Xue Litai, China Builds the Bomb (Stanford, Calif.: Stanford University Press, 1988). ISBN 0-8047-1452-5
  13. ^ [2][3][4]
  14. ^ Norris, Robert S. and Hans M. Kristensen. "Chinese nuclear forces, 2006," Bulletin of the Atomic Scientists 62:3 (May/June 2006): 60-63.
  15. ^ Lewis, Jeffery. "The ambiguous arsenal," Bulletin of the Atomic Scientists 61:3 (May/June 2005): 52-59.
  16. ^ http://nuclearthreatinitiative.org/db/china/nfuorg.htm
  17. ^ George Perkovich, India's Nuclear Bomb: The Impact on Global Proliferation (Berkeley: University of California Press, 1999), 293–297.
  18. ^ "India's Nuclear Weapons Program: Operation Shakti". 1998. http://nuclearweaponarchive.org/India/IndiaShakti.html. Retrieved 2006-10-10. 
  19. ^ "Joint Statement Between President George W. Bush and Prime Minister Manmohan Singh". Whitehouse.gov. http://georgewbush-whitehouse.archives.gov/news/releases/2005/07/20050718-6.html. Retrieved 2009-05-15. 
  20. ^ Implementation of the India-United States Joint Statement of July 18, 2005: India’s Separation Plan
  21. ^ U.S.-India Civil Nuclear Cooperation Initiative – Bilateral Agreement on Peaceful Nuclear Cooperation
  22. ^ "IAEA Board Approves India-Safeguards Agreement". Iaea.org. http://www.iaea.org/NewsCenter/News/2008/board010808.html. Retrieved 2009-05-15. 
  23. ^ Statement on Civil Nuclear Cooperation with India
  24. ^ Congressional Approval of the U.S.-India Agreement for Cooperation Concerning Peaceful Uses of Nuclear Energy (123 Agreement)
  25. ^ Secretary of State Condoleezza Rice and Indian Minister of External Affairs Pranab Mukherjee At the Signing of the U.S.-India Civilian Nuclear Cooperation Agreement
  26. ^ Interview With Undersecretary of State for Arms Control and International Security Robert Joseph, Arms Control Today, May 2006.
  27. ^ Was India misled by America on nuclear deal?, Indian Express.
  28. ^ ACA: Final NSG Statement
  29. ^ "Case Studies in Sanctions and Terrorism: Pakistan". Iie.com. http://www.iie.com/research/topics/sanctions/pakistan.cfm. Retrieved 2009-05-15. 
  30. ^ See A.Q. Khan: Investigation, dismissal, confession, pardon and aftermath, for citations and details.
  31. ^ "CIA's Hayden: North Korea Nuke Test 'Was a Failure'". Newsmax.com. 2007-03-28. http://www.newsmax.com/archives/articles/2007/3/28/83234.shtml. Retrieved 2009-05-15. 
  32. ^ Israel Nuclear Overview, Nuclear Threat Initiative (August 2010).
  33. ^ Avner Cohen and William Burr, "The Untold Story of Israel's Bomb," Washington Post, April 30, 2006; B01.
  34. ^ For a discussion of what is and isn't known about the Israeli bomb program, and how it became known, see: Avner Cohen, The Worst-Kept Secret: Israel's bargain with the Bomb (Columbia University Press, 2010).
  35. ^ Israel's Nuclear Weapons, Federation of American Scientists (August 17, 2000)
  36. ^ There are a wide range of estimates as to the size of the Israeli nuclear arsenal. Most sources put 200 as the highest possible value. One source in 1997 suggested "more than 400", but this has not been echoed in later analysis. 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.
  37. ^ a b c d Murphy, Philip D. (12 November 2009). "NATIONAL SECURITY ADVISOR HEUSGEN ON AFGHANISTAN, MIDDLE EAST, IRAN, DETAINEES, RUSSIA, NUKES AND BALKANS". Cablegate. Wikileaks. Archived from the original on 30 November 2010. http://www.webcitation.org/5udZJ4Ro6. Retrieved 30 November 2010. "a withdrawal of nuclear weapons from Germany and perhaps from Belgium and the Netherlands could make it very difficult politically for Turkey to maintain its own stockpile" 
  38. ^ "Berlin Information-center for Transatlantic Security: NATO Nuclear Sharing and the N.PT - Questions to be Answered". Bits.de. http://www.bits.de/public/researchnote/rn97-3.htm. Retrieved 2009-05-15. 
  39. ^ Hans M. Kristensen (February 2005). U.S. Nuclear Weapons in Europe. Natural Resources Defense Council. http://www.nrdc.org/nuclear/euro/euro.pdf. Retrieved 2006-05-23 
  40. ^ Statement on behalf of the non-aligned state parties to the Treaty on the Non-Proliferation of Nuclear Weapons, 2 May 2005
  41. ^ ISSI - NPT in 2000: Challenges ahead, Zafar Nawaz Jaspal, The Institute of Strategic Studies, Islamabad
  42. ^ NATO's Positions Regarding Nuclear Non-Proliferation, Arms Control and Disarmament and Related Issues, NATO, June 2005
  43. ^ Nuclear Weapons Program (South Africa), Federation of American Scientists (May 29, 2000).
  44. ^ Belarus Special Weapons, Federation of American Scientists
  45. ^ Kazakhstan Special Weapons, Federation of American Scientists
  46. ^ Ukraine Special Weapons, GlobalSecurity.org
  47. ^ Ukraine Special Weapons, Federation of American Scientists

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