 Their main intent was to restrict Communist expansion in Indochina as they thought it would soon lead to Communist takeovers in Thailand, Laos, Malaya, and all of what later became Vietnam.This would have resulted in a change in balance of power throughout Asia.The U.S. foreign policy establishment saw national security US and Western Europe's interests being marginalized due to the rise of this Communist expansion, and thus it strived to take measures to restrict it.