 Up to November 1965, McNamara who been a supporter of the war, first started to have doubts about the war, saying at a press conference that "it will be a long war", which completely contradicted his previous optimistic statements that the war would be brought to a close soon.Although he was a prime architect of the Vietnam War and repeatedly overruled the JCS on strategic matters, McNamara gradually became skeptical about whether the war could be won by deploying more troops to South Vietnam and intensifying the bombing of North Vietnam, a claim he would publish in a book years later.He also stated later that his support of the war was given out of loyalty to administration policy.