State of Denial" documents the Bush administration's Iraq debacle from the beginning. First there are Bush's initial rationale for becoming (our least-prepared modern-day) president prior to completing his first term as Texas' governor - basing his entire rationale on tax cuts, modernizing the military (eg. missile defense), education reform (Bush's major Texas "success" in Houston turned out to be a fraud), and helping faith-based initiatives (no thoughts whatsoever about foreign policy). Another Bush motivation to run, per Prince Bandar, Saudi Arabia's Ambassador, was to get revenge for his father's defeat by Clinton/Gore; then there was the smoldering need for finishing the job on Saddam Hussein. (Needless to say, these do not total to good rationale for becoming U.S. President, nor are they indicative of a serious thinker.)
Selecting Cheney as V.P. running-mate also helped set things in the wrong direction - his bias towards finding evidence of WMD (eg. digging into unverified intelligence cables), focus on secrecy and regaining executive powers underlay much of the Iraq War marketing. Then there was Bush's selection of Rumsfeld for Secretary of Defense - partly based on the idea of proving Bush #1 wrong (didn't trust Rumsfeld, thought him too self-sure and arrogant), and Rumsfeld's subsequent selection of Joint Chiefs Chairmen that were easy to roll over (eg. reduce requested Iraq troop strength; fail to take their issues directly to Bush, per Nichols-Goldwater).
(Failing to send enough troops into Iraq probably is the single most disastrous mistake made in Iraq War II, other than invading in the first place. However, it may be unfair to blame Rumsfeld - the Bush administration "group-think" (except for Powell) was that we'd be out of Iraq within a few months; further, it is doubtful that the U.S. has the troops to sustain levels the generals believed were needed. On the other hand, Rumsfeld has no excuse for not immediately taking action to improve vehicle armor against IEDs, failing to create a military strategy - besides aggravating all Iraqis through night-time raids, then driving up and down the roads allowing them the opportunity for IED revenge - to achieve security, and failing to create a set of 3-5 key performance measures and goals.)
Deeper into the plot we get CIA Director Tenet's July 2001 effort to convince Rice to make terrorism a priority, only to get the "brush-off" from her - Woodward documents that no terrorism plan was even made ready for approval until 9/10 (after eight other issues), hardly the priority Rice claims. Far worse, if the FBI had simply been focused and monitored one of the two hijackers it knew were in the country, it would have learned that he bought ten tickets for himself and other terrorists for those fateful 9/11 flights - possibly unraveling the entire plot!
"State of Denial" continues on to assemble other key pieces, including Bush's stubbornness, over-reliance on Cheney and Rumsfeld, and lack of curiosity (probably also the reason Bush #1 did not communicate his serious Iraq concerns pre-invasion), Rice's inability to challenge others' thinking, to move beyond "you're not on the team" vs. dissenters, follow-up on action items, and failure to update Iraq planning as the situation changed, Bremer's extremely damaging decisions (delaying elections and turnover of power, disbanding the Iraq army, de-Baathing the nation), Powell's failure to use his moral authority to confront Bush, and an incredible administration-wide inability to make decisions in an open and inclusive manner, set goals, delegate, pursue performance descepancies, resolve disagreements (eg. assign responsibility for postwar Iraq security), or follow-up. (How did he ever get through Harvard Business School?) Meanwhile, as the "Iraqis stand up" (hundreds of thousands of trained police and army recruits), we fail to "stand down" because the number of attacks continually increases - despite Bush's constant claims of progress.
Bottom Line: President Bush, our first "MBA president" both lacks the requisite experience and skills, and is psychologically unfit to lead the nation; to compensate he focuses on being a "cheerleader" (simply willing things to happen), and distorts and withholds information.