How did the United States respond to the challenge of the Soviet Union after the Second World War?

The early Cold War period (1946-1964) is often described as a time of “affluence and anxiety.” How did the United States respond to the challenge of the Soviet Union after the Second World War? Describe the Truman administration’s key decisions and policies regarding perceived Soviet expansionism. How did the U.S. respond domestically to what American leaders regarded as the threat of communism? If Americans stood shoulder-to-shoulder against Communism, what was the consensus on what they were for? How did our assumptions about communism lead to our involvement in Vietnam?