JFK's Cold War foreign policy was called containment. The US did not attempt to overthrow existing communist governments but it did not want to allow any non-communist nations to be taken over by communism. The spread of communism was to be contained.
Albania and Yugoslavia
The former USSR, headed by Russia, were communist countries. Most of the outlying territories were taken by force and unwillingly converted to communist governments.
Most democratic countries feared that if communist nations had nuclear power, they would have the power to overthrow any democratic government and create a new one world communist government.
Yugoslavia
They don't - there are no communist nations.
There can be no such thing as a Communist government, as Communism does away with governments, classes and money. The societies in eastern Europe were state capitalist.
Generally speaking, the non-communist nations of Western Europe were doing well in comparison to nations where Stalin had established communist governments in much of Eastern Europe. The free market policies of the West were yielding better economic growth then the centrally planned economies of Eastern Europe. The US helped to jump start the economies of Western Europe through the Marshall Plan.
The Soviet Union established communist governments in Eastern European nations.
The defensive alliance of communist nations was called the Warsaw Pact.
The cold war was a struggle between Communist Nations and NON-Communist Nations.
Three nations divided into communist and non-communist were Germany, Korea and Vietnam(until it became completely communist)