In retrospect

Robert S. McNamara, the brilliant secretary of defense for Presidents Kennedy and Johnson, helped lead America into Vietnam. McNamara believed that the fight against communism in Asia was worth the sacrifice of American lives, and yet he eventually came to believe that the war was, in fact, unwinnable. Outnumbered by those who wanted to continue fighting, he left the Johnson administration and his involvement in Vietnam behind. He refused any public comment on the war, and for almost three decades he has kept that silence - until now. Drawing on his personal experience and a wealth of…