The structure of Argument Without End is unconventional, with McNamara writing introductions and conclusions to most of the chapters, which sometimes read like excerpts of transcripts and often like pieces of analytical history. Readers will get the sense of observing a graduate-level seminar on the war, with some of its most knowledgeable participants and critics making presentations. The result is a provocative text eager to challenge assumptions. McNamara's presence hangs over everything--this really is his book, despite the numerous coauthors sharing credit--and his sense of optimism is eerie. "Both Hanoi and Washington could have accomplished their purposes without the appalling loss of life," he writes. A statement like that shows 20/20 hindsight, yet it's an awfully candid remark from a man who had much to do with America's humiliation in Southeast Asia. This is an important contribution to our understanding of that terrible conflict. --John J. Miller