Moyers: LBJ's Escalation in Vietnam
One of the best pieces I've seen touching on Afghanistan is Bill Moyers' Journal from 11/20/09 on Lyndon Johnson's escalation in Vietnam. Johnson agonized about the war, and consulted many people, but they and Johnson all seemed to feel that Vietnam was a lousy situation, but withdrawal wouldn't work (for political and strategic reasons). Follow the link, and you can watch the hour-long program