USA HISTORY

Detailed explanation-1: -Détente was a period in which Cold War tensions eased between the Soviet Union and the United States from the late 1960s to 1979. Détente was characterized by warm personal relationships between US president Richard Nixon (1969–1974) and Soviet leader Leonid Brezhnev (1964–1982).

Detailed explanation-2: -The treaty: prohibited nuclear weapons tests or other nuclear explosions under water, in the atmosphere, or in outer space. allowed underground nuclear tests as long as no radioactive debris falls outside the boundaries of the nation conducting the test.

Detailed explanation-3: -On August 5, 1963, the Limited Test Ban Treaty was signed by the United States, Great Britain, and the Soviet Union. After Senate approval, the treaty that went into effect on October 10, 1963, banned nuclear weapons testing in the atmosphere, in outer space, and under water.

Detailed explanation-4: -Nuclear Test-Ban Treaty, formally Treaty Banning Nuclear Weapons Tests in the Atmosphere, in Outer Space, and Under Water, treaty signed in Moscow on August 5, 1963, by the United States, the Soviet Union, and the United Kingdom that banned all tests of nuclear weapons except those conducted underground.