intelligence officer, james "spider" marks, in charge of looking for wmd in iraq, looked at a list of 946 wmd sites and found, quote, he couldn't say with confidence there were any weapons of mass destruction or stockpiles at a single site. >> well, that's one. >> but you said it was worldwide. there was disagreement. >> there was a consensus. it doesn't imply that everyone agreed. but it imply tlas the preponderance of the evidence and the majority agreement was there were wmd. you can go back and try to rewrite history, but at that moment, we were faced with the belief that he had wmd, he was a threat to the stability of the region and in the aftermath of 9/11, the calculus changed. >> scott mcclellan was the white house press secretary for george w. bush from 2003 to 2006, he's the author of "the new york times" best seller "what happened inside the bush white house and washington's culture of deception." karl rove was the second source in bob novak's column in which he outted cia agent valerie plame.