I’m not sure this passage is entirely consistent with there supposedly being no internal debate prior to the war (page 318-319):
The meeting on Saturday morning, September 7, sparked considerable debate about the wisdom of trying to revive a UN inspection regime. Colin Powell was firmly on the side of going the extra mile with the UN, while the vice president argued just as forcefully that doing so would only get us mired in a bureaucratic tangle with nothing to show for it other than time lost off a ticking clock. The president let Powell and Cheney pretty much duke it out. To me, the president still appeared less inclined to go to war than many of his senior aides.