The Cold War ( activity 1 ) 2015 By indiabooze Aug 6, 1945 August 6: The United States drops atomic bomb on Hiroshima Period: Aug 6, 1945 to Aug 1, 2000 The Cold War ( ACTIVITY 1 ) 2015 Mar 12, 1947 March 12 : Truman Doctrine - Truman declares active role in Greek Civil War Apr 4, 1949 April 4 : NATO ratified Jan 12, 1951 January 12 : Federal Civil Defense Administration established Dec 8, 1953 December 8: Ike's Atoms for Peace speech May 1, 1955 May : Warsaw Pact formed Nov 3, 1957 November 3: Sputnik II launched - Laika died in space Jan 2, 1959 January : Cuba taken over by Fidel Castro Aug 13, 1961 August 13 : Berlin border is closed Nov 1, 1963 November : President Kennedy assassinated in Dallas, Texas Apr 1, 1965 April : U.S. Marines sent to Dominican Republic to fight Communism Jan 1, 1967 The US Secretary of Defence Robert McNamara admits that the US bombing raids had failed to meet their objectives Jul 20, 1969 July 20 : Apollo 11 lands on the moon Jan 1, 1971 Publication of the Pentagon Papers Jan 1, 1973 January : Cease fire in Vietnam between North Vietnam and United States Apr 17, 1975 April 17 : North Vietnam defeats South Vietnam which falls to Communist forces Nov 1, 1979 November : Shah of Iran overthrown; Iranian Hostage Crisis Oct 1, 1983 October : U.S. troops invades and overthrows regime in Grenada Jan 1, 1985 Mikhail Gorbachev becomes leader of the Soviet Union initiating a campaign of openness called "glasnost" and restructuring called "perestroika" Oct 1, 1987 October : Reagan and Gorbachev agree to remove all medium and short-range nuclear missels Sep 1, 1989 September : Hungary becomes independent Oct 3, 1990 Germany reunited Aug 1, 1991 August : End of Soviet Union and the Cold War Ends