Cold War By ellagutersonlove 1945 World War 2 Ends which also ends American Soviet Cooperation 1948 Berlin Blockade and Airlift increases tensions 1948 Truman establishes the Marshal plan to contain communist expansion 1949 creation of NATO to deter an aggression from the soviet 1950 Korean War begins 1955 Warsaw Pact as a response to NATO through collective security 1956 Krushchev calls for a peaceful co-existence 1956 Hungrian Uprising 1961 Berlin wall is built to prevent further western expansion 1962 Cuban missile crisis almost leads to nuclear war 1968 Prague Spring ends, Soviet Union Invades 1968 Nuclear Non-proliferation treaty is signed 1975 Helsinki Accords provide a degree of detente during the Cold War 1975 Vietnam War Ends 1979 Soviet invasion of Afghanistan 1980 Solidarity trade union organizes pro-democray movements in Poland 1989 Berlin wall is torn down, a year later Germany is reunified 1991 START is signed to reduce number of nuclear weapons being created as a form of detterence 1991 Warsaw Pact is dissolved some members seeking to join NATO 1991 Soviet Union ceases to exist, effectively ending the Cold War