What is the Truman Doctrine focused on?

The Truman Doctrine is focused on providing support to nations facing external pressure, particularly in the context of the Cold War. Announced by President Harry S. Truman in 1947, this policy was a response to the perceived threat of communism and Soviet expansion. The Doctrine was specifically aimed at countering Soviet influence in countries such as Greece and Turkey, which were struggling against communist movements. By pledging military and economic aid to these nations, the United States sought to help them resist subjugation and maintain their independence.

This approach marked a significant shift in U.S. foreign policy, moving from isolationism to a more interventionist stance designed to contain communism globally. The support provided under the Truman Doctrine was not only military assistance but also included economic support to help stabilize those nations.

The other options do not accurately reflect the primary focus of the Truman Doctrine. While supporting self-determination, ensuring economic prosperity, and establishing military bases were relevant in broader contexts, the key feature of the Truman Doctrine was its commitment to aiding countries resisting external pressure, particularly from the Soviet Union.