Before the words “nuclear nonproliferation” entered official discourse, the term “non-diffusion” (or “non-dissemination”) of nuclear weapons was used routinely. In part stemming from the negotiations over Berlin, during 1962-1963 the Kennedy administration held talks with allies and adversaries on the possibility of a non-diffusion agreement which included Germany. In light of a recent Soviet proposal, INR veteran Soviet expert Sonnenfeldt explained why Moscow had moved away from earlier proposals singling out West Germany and was focusing on the general applicability of a non-diffusion agreement.

This lengthy report was State Department Bureau of Intelligence and Research's contribution to the first National Intelligence Estimate on the nuclear proliferation, NIE 100-6-57. Written at a time when the United States, the Soviet Union, and the United Kingdom were the only nuclear weapons states, the “Fourth Country” problem referred to the probability that some unspecified country, whether France or China, was likely to be the next nuclear weapons state. Enclosed with letter from Helmut Sonnenfeldt, Division of Research for USSR and Western Europe, to Roger Mateson, 4 June 1957, Secret

Gromyko informs Liu Xiao of the Soviet position and strategy in its negotiations with the United States and the United Kingdom for halting nuclear tests.

Romanian meeting minutes of Warsaw Pact Political Consultative Committee meeting concerning non-proliferation.

Short report on arguments being made in India to gain support from the Soviet Union for the Indian nuclear program. India would like to gain international prestige similar to China.

Report on India's response to the signing of the Intermediate-Range Nuclear Forces (INF) Treaty by the United States and Soviet Union. India supportive of disarmament efforts, in part because of its concerns about China and Pakistan. Describes a speech made by Prime Minister Rajiv Gandhi at the Six Nation Five Continent Peace Initiative summit in January at Stockholm.