Some interesting stuff here.

Including the answer to why Saddam was cagey about WMDs if he did not have them:

One of the great puzzles surrounding the disclosure that Iraq had no stockpiles of weapons of mass destruction by the time U.S. forces invaded last year is why Hussein would not have revealed that fact. Duelfer suggests an answer by depicting Hussein as engaged in a "difficult balancing act."

On the one hand, Duelfer says, Hussein recognized the need to disarm to achieve relief from U.N. sanctions. On the other, he felt the need to retain such weapons as a deterrent.

"The regime never resolved the contradiction inherent in this approach," Duelfer says.