The Quiet American (1958)

In this adaptation of Graham Greene's prophetic novel about U.S. foreign policy failure in pre-war Indochina, Audie Murphy plays an innocent Young American opposite the older, cynical Brit Sir Michael Redgrave. They play out their widely different views on the prospects struggle for the hearts and minds of the Vietnamese people in their competition over a young woman. Murphy wants to reform her and make her a typical middle class American housewife; Redgrave accepts her inability to formulate or retain a political ideal and while promising her no real future, he objects to Murphy's attempts to change her. It's not clear whether Murphy is just what he appears - a bungling Yankee do-gooder, or a deliberate agent of U.S. covert operations.