Treaty on the Non-Proliferation of Nuclear Weapons

International treaty Nuclear Non-Proliferation TreatyTreaty on the Non-Proliferation of Nuclear WeaponsParticipation in the Nuclear Non-Proliferation Treaty Recognized nuclear-weapon state ratifiers Recognized nuclear-weapon state acceders Other ratifiers Other acceders or succeeders Former parties (North Korea) Non-parties(India, Israel, Pakistan, South Sudan) Partially recognized state that ratified (Taiwan) Signed1 July 1968LocationMoscow, Soviet Union; London, United Kingdom; Washington D.C., United StatesEffective5 March 1970ConditionRatification by the Soviet Union, the United Kingdom, the United States, and 40 other signatory states.Parties191 (according to the United Nations, complete list) 190 (de facto)membership in dispute: North Koreanon-parties: India, Israel, Pakistan and South SudanDepositaryGovernments of the United States, the United Kingdom, and the Russian Federation (successor to the Soviet Union)LanguagesEnglish, Russian, French, Spanish and ChineseFull text Nuclear Non-Proliferation Treaty at Wikisource This article is part of a series aboutNon-proliferation, disarmament, & arms control Overview Nuclear weapons Major treatiesNPT · TPNW · JCPOA · CPPNM · UN