1947- Truman Doctrine: It was an American foreign policy purpose to counter Soviet geopolitical expansion.
1948- Berlin Blockade: was a major international crisis during the Cold War. The Soviet Union blocked the Western Allies routes to access West Berlin.
1949- NATO formed: This is an intergovernmental military alliance between 29 countries. It is a system of collective defense against any external attack.
1950-Korean War: It was a war between South Korea and North Korea, one represented the Soviets and the other the United States.
