Why did the U.S. forces fail to achieve victory in Vietnam?

Essay from the year 2002 in the subject History Europe - Germany - Postwar Period, Cold War, grade: A, University of St Andrews (Department of Modern History), course: America and Vietnam, language: English, abstract: The discussion of this question starts with the definition of "victory". Surprisingly John Kennedy perceived the definition of the victory as difficult when he mentioned: "how can we...