it's co-authored by a father and daughter writing team, journalist marvin kalb and deborah kalb. it's very good to have you both here. marvin kalb, why do you argue that the vietnam war and the loss of it was turning point in american history? >> well, because up to that point, judy, the u.s. had never lost a war. friends of mine in europe have always said you guys have never been so lucky. we've lost many wars and we readjust. in the united states it took a long period of adjustments, 36, 37 years now since the end of the war, and we're still haunted presidents are, by the way in which that war affects what they think about. are we going to lose another war? how do we get out of another vietnam? these issues are on their minds. is. >> woodruff: why has it persisted that way, deborah kalb? >> i think the in addition to the idea that it was the only war that the u.s. lost, it also played an important role in a lot of these president's lives and there's three different sort of mini generations of presidents that we look at in the book, the first are the ones who are more the world

inaudible conversations] [inaudible conversations] [inaudible conversations] >> coming up, marvin and deborah kalbesidential decisions to go to war since 1975, co-authors of "haunting legacy" interviewedded live at booktv.org. tomorrow, live coverage of the fourth circuit court of appeals conference taking place at the greenbriar resort in west virginia. it will start with a conversation by john roberts and a panel of law professors talking about supreme court decisions from last term. it begins 9 a.m. eastern on c-span and c-span rood. >> next, the status of u.s. forces in afghanistan. the house armed services committee herd from joint chiefs of staff admiral mike mullen who supports president obama's plan to reduce troops in afghanistan. starting next months, 10,000 troops will be returning home by the end of the year, and a total of 33,000 troops by the end of september. >> the decision to withdraw 10,000 troops from afghanistan by the end of the year, and the remaining 23,000 serge forces by next summer. my position on the war effort has remained consistent. afghanistan's stability is vital to