COLD WAR By Francesca Carvajal 1945 The first phase of the Cold War began immediately after the end of World War II in 1945 1945 Atomic bomb attack on Hiroshima and Nagasaki 1947 The Marshall plan is carried out, which consisted of economic support in the recovery of the countries damaged in Europe by the war. 1949 United states created the military alliance "OTAN" 1950 KOREAN WAR 1955 The soviet union established the Warsaw Pact 1956 Soviet invasion of Hungrary 1969 Landing on the moon. The first man in the moon 1986 Chernobyl Accident 1989 Fall of the Berlin Wall.