$End of the Cold War

US Leadership

1970 - 9 August 1974
9 August 1974 - 20 January 1977
20 January 1977 - 20 January 1981
20 January 1981 - 20 January 1989
20 January 1989 - 31 December 1991

USSR Leadership

1970 - 10 November 1982
11 March 1985 - 25 December 1991

Events

May 1972
1975
1978
June 1979
25 December 1979 - February 1989
1980
December 1981
1983
1987
June 1989
November 1989
November 1989
25 December 1989
3 October 1990
1991
25 December 1991