Instructions and language from the Politburo to the Soviet representative about the Treaty on Non-Proliferation of Nuclear Weapons.

Directives from the Politburo to the Soviet Delegation at the Soviet-American technical negotiations. Directive includes proposals and agreements to negotiation points.

Approvals and questions sent from the Politburo to the United States about the Soviet-American technical negotiations on the issue of peaceful uses of nuclear explosions.

Points of discussion for Soviet-American technical negotiations on the issue of peaceful use of nuclear explosions.

Statement sent to the Soviet ambassador in Washington chastising the United States for the B-52 crash in Greenland.

Politburo to the Soviet ambassador and representatives giving them language to use when discussing the American Air Force crash of a B-52 carrying hydrogen bombs in Greenland.

Bulganin proposes a halt on nuclear tests among the United States, the Soviet Union, and the United Kingdom beginning on January 1, 1958.

Report by N.M. Emanuel on the U.S. Castle Bravo test in the Marshall Islands. The report surmises from fallout data that the bomb used a fission-fusion-fission design, and that the bomb contained a larger than normal amount of fissile material which induced a thermonuclear reaction.

On US national security policy at the beginning of the Cold War. Includes an assessment of the conflict between the United States and the Soviet Union, as well as US and Soviet nuclear weapons capabilities.

Memo on Soviet-American consultations in Washington between November 25 and 27, 1991. The American side proposed discussion of limited non-nuclear missile defense and early warning systems, but the Soviet side refused to be drawn into lengthy discussions. The US also rejected the Soviet proposal to create joint missile attack warning systems.