Ronald Reagan does not deserve all of the credit, but he certainly takes home a majority in the defeat of communism in Europe. The Berlin airlift operation, Star Wars, and other talks he had throughout the conflict were precisely what the United States needed to find diplomatic resolution and preventing communism from infiltrating Europe.
Ronald Regan deserves the credit for the fall of communism in Europe. The fall of communism in Europe can be mainly attributed to economic failures within the communist countries. Much of the poor economic conditions where the result of sanctions imposed by America during the Cold War. Regan was the leader of America during the fall of communism in Russia, he helped to end the regime by use of his foreign policy and his missile defense spending.
The Communist experiment was an unfortunate failure in Europe thanks to bitter, petty in-fighting and controlling totalitarian dictators. Ronald Reagan made great speeches against the totalitarian regimes, but they were well into the process of self defeat by the time he entered office. The end of Communism in Europe was an inevitability.
Ronald Reagan does not deserve credit for the fall of communism because he did not make it retreat all on his own. It was mainly the mistakes of the Soviets and less the work of the enemies of the United States. The Soviets simply collapsed and ruined their chances at power.