<Li> December 26: The Council of Republics of the Supreme Soviet of the USSR recognizes the dissolution of the Soviet Union and decides to dissolve itself . </Li> <Li> December 31: On New Year's Eve all Soviet institutions cease operations and the Cold War ends with the collapse of the Soviet Union . </Li> <Ul> <Li> April 27: Breakup of Yugoslavia . </Li> <Li> April 28: Collapse of the Democratic Republic of Afghanistan . </Li> <Li> December 31: Dissolution of Czechoslovakia . </Li> </Ul> <Li> April 27: Breakup of Yugoslavia . </Li>

What was the last event of the cold war