>>>Yes, Bush ultimately "sold" the regime change too heavily based on a weapons of mass destruction angle (in my view, based on heavy pressure from his advisers), but that was only one angle.<<<
The only angle that matters is whether Bush went to war out of concern for an imminent and grave threat from Iraq or if he did it for personal reasons and lied and mislead congress about it. Other than that, I agree with you that O'Neill didn't offer anything new, but he DID, as a former cabinet member, confirm what so many others have already suggested or suspected.