as legally, morally, and politically bound to the principles that resulted from the Nuremberg trials. Thus, Taylor is concerned by how the principles of the Nuremberg trials would apply to the United States' conduct of the Vietnam War. When Nuremberg and Vietnam: An American Tragedy was published, those in favor of and those in opposition to the United States involvement in Vietnam frequently cited the Nuremberg trials in support of their positions. Those in favor of United States involvement argued that North Vietnam attacked South Vietnam in violation of Article 2 of the United Nations Charter; South Vietnam was justified in using force to repel such an attack; and this in turn allowed the United States to join with South Vietnam as provided by Article 51. However some would claim that the US and South Vietnamese actions in the Vietnam War would constitute "aggressive warfare" by the standards of Nuremberg. Taylor points out that the definition of "aggressive warfare" is ambiguous, thus severely hindering any attempt to determine which of the belligerent powers involved in the Vietnam War could be deemed the "aggressor." What's more, such ambiguities lead to several related questions, such as the legality of refusing to serve in Vietnam. At the time, many conscientious objectors refused to serve in Vietnam on the grounds that their complicity in what they viewed as an illegal war made them, by implication, guilty of crimes against humanity. Taylor cites possible war crimes in regard to the Son My incident, which is more commonly known as the My Lai Massacre of 1968 . It is in this portion of the book that Taylor makes the most extensive comparison of Nuremberg to the Vietnam War. In this section, Taylor quotes two eyewitness accounts, each from a different war. One account, written by a German construction engineer, describes the killing of Jews during the Holocaust by German SS officers in 1942. This account is juxtaposed on the adjacent page by an eyewitness account of the My Lai Massacre. The accounts are similar, yet Taylor explains all of the differences, and in characteristically unbiased fashion shows the difficulty in determining whether or not crimes were committed by the United States. Taylor also raises domestic problems with regard to the United States' involvement in the Vietnam War. According to Taylor, it remains to be seen whether the United States Congress or the Executive branch of government