What foreign policy did the truman doctrine stand for during the post World War II years

The United States would aid all free nations struggling against communism

Explanation:

Both countries were being threatened by Soviet takeover and Truman wanted to prevent either country from falling victim to communism. Truman also stated that "it must be the policy of the United States to support the free peoples who are resisting attempted subjugation by armed minorities or outside pressures. (got it right on study island)

The answer is:

Foreign policy under the Truman doctrine stood for nation-building and interventionism during the post World War II years.

Explanation:

The Truman Doctrine made up American Cold War policy in Europe and around the world. The commitment's rhetoric, promised that the US should aid all 'free people' being subjugated.

It also mobilized American economic power to modernize and stabilize unstable regions first without having direct military intervention.

This commitment set the stage for innumerable ventures that led to global interventions when nation-building wasn't an option.