End of Cold War Events By avinson92 Apr 20, 1983 President Reagan proposes Strategic Defense Initiative Apr 20, 1986 Gorbachev ends economic aid to Soviet satellites Oct 20, 1987 Reagan and Gorbachev agree to remove all medium and short-range nuclear missiles by signing treaty Nov 20, 1989 Berlin Wall falls Dec 20, 1989 Communist governments fall in Czechoslovakia, Bulgaria, and Rumania; Soviet empire ends Oct 3, 1990 Germany reunited Apr 20, 1991 Warsaw Pact ends