what was the main goal of the truman doctrine

The main goal of the Truman Doctrine was to prevent the spread of communism worldwide by providing political, military, and economic assistance to democratic nations threatened by authoritarian forces, particularly communist expansion led by the Soviet Union. It was aimed explicitly at stopping Soviet influence from expanding, especially in Greece and Turkey, which were seen as strategically important to U.S. national security and regional stability. The doctrine marked a significant shift in U.S. foreign policy from isolationism to active intervention to support "free peoples" resisting subjugation by armed minorities or outside pressures. This policy laid the foundation for America's Cold War strategy of containment against Soviet expansion