Did the Soviet Union want to bring communism to Greece and Turkey

In February 1947, the British government informed the United States that it could no longer furnish the economic and military assistance it had been providing to Greece and Turkey since the end of World War II. The Truman administration believed that both nations were threatened by communism and it jumped at the chance to take a tough stance against the Soviet Union. In Greece, leftist forces had been battling the Greek royal government since the end of World War II. In Turkey, the Soviets were demanding some manner of control over the Dardanelles, territory from which Turkey was able to dominate the strategic waterway from the Black Sea to the Mediterranean.