Cold War Time Line By facebooker_100004020879154 Jan 1, 1942 Formation of the United Nations Feb 4, 1945 Yalta Conference Jun 19, 1945 Mao Zedong gains control in China Jul 17, 1945 Potsdam Conference Mar 12, 1947 United States develop and utilize the Marshall Plan Jun 24, 1948 Berlin Blockade Apr 4, 1949 Formation of NATO Aug 29, 1949 Soviets develop atomic bomb Jun 25, 1950 North Korea Invades South Korea Jul 30, 1950 United States sends troops to Korea Jul 27, 1953 Armistice of Korean War The end of the War Oct 4, 1957 Soviets launch Sputnik A Russain Satilite. Fist Satilite is space Oct 16, 1962 Cuban missile crisis Cuba wanted to Blow up America and We stoped them