Yes Truman presented the American policy as offensive, rather than defensive. Truman was the American president that followed the offensive path as far as his speech in the Democratic Convention was concerned. He was the President and had to fight with the growing issue of communism in his country.
They agreed because they hoped it would offer stability for the U.S economy.
I think, Free trade, and security, but there might be more.
Evolution
is the stage from mokey to man