Answer:
The Soviet Union responded to anti-communist rebellions in European countries by using military force and political repression to crush them. For example, the Soviets sent tanks and troops to put a brutal end to the Hungarian revolution in 1956, to crush the antigovernment riots in East Berlin in 1953, and to invade Czechoslovakia in 1968 to stop the Prague Spring reforms. The Soviets also supported communist parties and movements in other countries, such as Greece, Turkey, Italy and France, to spread their influence and ideology.
The Soviet strategy contrasted with the American foreign policy during the Cold War, which was based on the principle of containment of communism. The USA did not intervene directly in Eastern Europe, but instead provided economic and military aid to countries that were threatened by communism, such as Greece and Turkey under the Truman Doctrine. The USA also formed alliances with Western European countries, such as NATO, to deter Soviet aggression. The USA also supported democracy and human rights in Eastern Europe through diplomatic pressure and propaganda.