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Non-Proliferation Treaty (NPT)

The Treaty on the Non-Proliferation of Nuclear Weapons or Non-Prolfieration Treaty (NPT) is an international treaty developed to prevent the spread of nuclear weapons technology. Between 1965 and 1968, the treaty was negotiated by the United Nation's Eighteen Nation Committee on Disarmament. The treaty was first opened for signatures in 1968 and entered into force in 1970. See also the 1995 NPT Review and Extension Conference collection. [Image: US Ambassador Llewellyn E. Thompson signs the NPT as Soviet Foreign Minister Andrei A. Gromyko watches in Moscow, Russia, on July 1, 1968.]

Popular Documents

January 26, 1968

"Defence And Oversea Policy Committee: Non-Proliferation: Memorandum By The Minister Of State For Foreign Affairs "

Subsequent to De Gaulle's November 1967 veto of Wilson's EEC application, senior British ministers still saw the European question as having considerable importance. Shortly before his departure from the role of Foreign Secretary, George Brown reported to the Defence and Oversea Policy Committee that the ructions over Article 3 of the NPT would be "particularly awkward for us as potential members of EURATOM and the E.E.C." De Gaulle's second "Non!" only served to postpone Britain's membership of the EEC, as Edward Heath's Conservative government successfully campaigned for accession, which took place in 1973.

October 8, 1963

Letter from Gomulka to Khrushchev, Marked 'Final Version'

Letter from Gomulka to Khrushchev discussing Polish opposition to Soviet proposal for a Non-Proliferation Treaty. Gomulka suggests that the treaty will further split the communist camp. While discussing the state of Sino-Soviet relations, the Polish leader suggests that the Soviet Union and the PRC adopt a common position in matters of foreign policy in order to strengthen the power of the Socialist camp.

April 9, 1968

Excerpts from Leonid Ilyich Brezhnev’s speech at the April 1968 Plenum of the Central Committee of the Soviet Communist Party

Brezhnev discusses negotiations with the United States over the Non-Proliferation Treaty.

October 2, 1967

Letter from Derek Day (Foreign Office) to Michael Palliser (Private Secretary for Foreign Affairs to the Prime Minister)

Responding to a request from Michael Palliser (Wilson's Private Secretary for foreign affairs), the Foreign Office's seasoned Europe-watcher Derek Day argued that the government needed to balance three – sometimes conflicting – UK interests. First, there was the position as a European power, particularly with regard to the ongoing EEC application. Second, there was the UK's status as a nuclear power, in which the UK shared “special responsibilities” with the US, exemplified by the UK's acquisition of Polaris submarine-launched ballistic missiles as its primary nuclear deterrent. Third, there was the desire to see a non-proliferation treaty concluded, which sometimes meant disagreement with both the United States and the Soviet Union. Day contended that the United Kingdom seemed to have been successful in positioning itself as understanding European anxieties, with Bonn having congratulated Wilson's administration on bring “good Europeans.” Day's assessment was seen and lauded by Wilson, who hoped that it was correct.

October 1967

Alva Myrdal, 'New Roads to Disarmament'

The author of “New Roads to Disarmament," Alva Myrdal was head of Swedish disarmament policy from 1962 to 1973. In her 1967 paper presented at the Institute of International Affairs in Warsaw, Belgrade, and Zagreb in 1967, Myrdalpositions nuclear disarmament in its broader context and elaborates on her visions of a new world order. She would publicize many of these same thoughts and observations in her 1976 book, The Game of Disarmament. How the United States and Russia Run the Arms Race. In 1982, she received the Nobel Peace Prize for her work on disarmament.