Answer:
President Truman believed that the threat facing Greece and Turkey in the aftermath of World War II was communist expansionism, particularly from the Soviet Union. He feared that without assistance, these countries might succumb to internal communist movements or external pressure from the Soviet Union, potentially destabilizing the region and undermining Western interests. This concern led to the formulation of the Truman Doctrine, which aimed to provide military and economic aid to countries threatened by communist aggression.
