cold war By darisha Feb 4, 1945 Yalta Conference a deal made between germany and the soviet union that the soviets broke because Stalin refuses free elections at Potsdam Jul 16, 1945 Potsdam Conference Allied conference held in the Berlin suburb of Potsdam after Germany's surrender in World War II. Mar 12, 1947 Truman Doctrine Jun 5, 1947 Marshall Plan Jun 28, 1948 Berlin Airlift Apr 4, 1949 NATO formation Apr 20, 2011 Warsaw Pact formation