Cold War By geberssam 1945 Potsdam Conference https://www.history.com/topics/world-war-ii/potsdam-conference#:~:text=The%20Potsdam%20Conference%2C%20held%20near,new%20American%20president%2C%20Harry%20S. Feb 9, 1946 Stalins hostile Speech Capitals and communist incompatible Mar 12, 1947 Truman Doctrine active role in greek civil war Feb 25, 1948 Communist takeover in Czechoslovakia Mar 2, 1948 Truman's Loyalty Program created to catch Cold War spies May 12, 1949 Berlin Blockade ends Aug 29, 1949 Russia tested its first atomic bomb Jun 24, 1950 Korean war begins 1955 Warsaw Pact signed Sep 4, 1956 USSR sent military aid to Afghanistan 1959 Cuba taken over by Fidel Castro 1960 John F. Kennedy elected President of USA 1962 Cuban Missile Crisis 1964 Gulf of Tonkin incident 1991 End of Cold War