What Was Truman's Motivation?

Truman’s motivation was economic and political, as well as humanitarian. The plan stipulated that the European nations had to work together in order to receive aid, thus enforcing unity through enticement, while seeking to undercut the political popularity of French and Italian Communists and dissuading moderates from forming coalition governments with them.
Likewise, much of the money had to be spent on American goods, boosting the postwar economy of the United States as well as the American cultural presence in Europe. Stalin regarded the program as a form bribery.