How the war in Vietnam came to represent the outer limits of feasible American intervention, how the working of the democratic process finally forced President Johnson to abandon a policy of escalation, and why the particular events of March 1968 signaled the end of an era constitute the subject matter of this prize-winning, firsthand account. As under secretary of the Air Force from October 1967 to February 1969, Townsend Hoopes had an insider's perspective on events. His book is both compelling memoir and searching historical inquiry. For this new paperback edition, Mr. Hoopes has written a supplemental chapter interpreting the final events of 1973-75 and assessing with masterful clarity the whole period of American involvement in Vietnam, from 1945 to 1975.