Robert S. McNamara was one of the brightest minds of the twentieth century yet he was still unable to prevent one of the fieriest conflagrations in modern times from exploding. Reflecting upon his time as Secretary of Defence for John F. Kennedy and Lyndon Johnson, he grants a lengthy interview with director Errol Morris, who combines the 2003 discourse with archival footage, original tape recordings, and thoughtful music composed by Philip Glass. McNamara does not limit himself solely his role in the escalation of the conflict in Vietnam but explains his background, education, military service during World War II, and …