He has not taken credit for 9-11 or the Anthrax attack. Saddam's goal is to ignite a war between Islam and the U.S. He knows he can not defeat the U.S., but he believes Islam can. The goal of the terrorist coalition is to provoke the U.S. into an action that will in return mobilize Islam against the U.S., yet allow the terrorist coalition appear to be the victim. That is why they don't take credit.