Taking a more extensive view of the American war in Indochina than have many other historians, Robert Schulzinger begins his well-crafted account at the end of World War II. The collapsing Japanese and French empires had created a political vacuum that could be filled only by a nationalist movement--one that, in Vietnam"s case, was also communist. American involvement, he writes, was questionable from the start. He quotes Dean Rusk, an architect of Kennedy and Johnson administration war policies, as saying that his greatest mistake was overestimating the patience of the American people and underestimating that of the Vietnamese. That was but one in a long series of miscalculations over three decades, and Schulzinger"s book admirably relates the sad history of that conflict.