第二次世界大战后，在东南亚政治舞台上美国扮演了一个十分重要的角色，以致于宏观地评论美国的亚太战略、微观地分析越南战争都成了世界史、国际关系史研究中的热门课题。在研究中，史学界往往把1945—1949年的美国对东南亚政策完全等同于50年代后的政策，下一个“从冷战格局 After the Second World War, the United States played a very important role in the political arena of Southeast Asia, so that a macroscopic review of the U.S. Asia-Pacific strategy and a micro analysis of the Vietnam War have become the hot topics in the history of world history and the study of the history of international relations . In the study, the historians often completely equated the policies of the United States toward Southeast Asia from 1945 to 1949 with the ones after the 1950s. The next one, "From the Cold War Pattern