Answer: The Cold War started in Europe. From 1945 to 1953, the USSR expanded its influence by creating the Eastern Bloc across states like Poland, Czechoslovakia, and Hungary. Stalin set up puppet communist governments that he could control. He repressed anyone who resisted.
First laid out by George F. Kennan in 1947, the policy stated that communism needed to be contained and isolated, or else it would spread to neighboring countries.
A constant nonviolent state of hostility between the Soviet Union and the US; began shortly after WWII with the rapid extension of Soviet influence over eastern Europe and North Korea; ended with the collapse of communism in Eastern Europe and the former Soviet Union.