This collection consists of unique records of U.S. agencies established to intervene in Vietnam-the country U.S. foreign policy deemed a lynchpin in the free world’s fight against communism. The Subject Files from the Office of the Director, U.S. Operations Missions, document the myriad concerns and rationales that went into the control and direction of U.S. economic and technical assistance programs, as well as the coordination of mutual security activities, with respect to Vietnam.