What foreign policy did the Truman doctrine stand for during the post-world war ii years?

The Truman Doctrine, established in 1947, signified a pivotal shift in U.S. foreign policy, emphasizing containment of communism. It aimed to support countries resisting Soviet influence, particularly in Europe, by providing military and economic assistance. This policy marked the beginning of America's active role in global affairs during the Cold War, promoting democracy and countering the spread of totalitarian regimes. Ultimately, it set the stage for U.S. involvement in various conflicts worldwide to curb communist expansion.