This “Limited Distribution” report on possible Japanese reactions did not anticipate that a test would cause basic changes in US-Japan security relations or in Tokyo’s general approach to nuclear weapons.

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.

The State Department writes to Islamabad urging Pakistan to not react if in fact India chooses to launch a nuclear test. On 15 December the New York Times published a story by Tim Weiner, under the headline “US Suspects India Prepares to Conduct Nuclear Test.” While some Indian journalists and policy experts were convinced that the story was a US government plant, Weiner had simply used due diligence in pursuing a lead from a non-government expert on nuclear proliferation issues. Worried that the story would exacerbate regional tensions by encouraging Pakistan to “act in a manner that jeopardizes our nonproliferation efforts in South Asia,” the Department wanted to enlist the Chinese to encourage the Pakistanis to “exercise restraint in response to these reports.”

(Excerpts) Minutes of discussions of the Warsaw Pact Political Consultative Committee concerning non-proliferation. The Romanian delegation argues against a joint declaration of the Warsaw Pact on non-proliferation for fear that it might be used against China. The other delegations argue that a joint declaration is necessary in order to prevent the creation of the Multilaterall Nuclear Force proposed by NATO.

Report based on information from a Soviet ambassador on India's strategy for dealing with Pakistan. India is concerned about the military support Pakistan is receiving from the United States and China, as well as Pakistan's nuclear weapons program. India is receiving military support from the Soviet Union, modernizing its forces, and seems to be preparing for war with Pakistan.

Memo discussing India's nuclear ambitions and position in Asia, especially in relation to China and Pakistan.

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.

Discussion of a British list of countries that were actual or potential manufacturers of inverters. The U.S. does not want to approach any "nuclear threshold states" yet because some might not cooperate or might inform Pakistan. Also discusses strategies for approaching the Soviet Union and China in the future.