In a piece on the Wall Street Journal's Editorial web page Review & Outlook section, we find a brief look into Saddam's interrogation by FBI agent George Piro.
The FBI interrogator says that, while Saddam said he no longer had active WMD programs in 2003, the dictator admitted that he intended to resume those programs as soon as he possibly could.
Iraq's active WMD program had been destroyed, mostly by U.N. weapons inspectors, sometime in the 1990s, but Saddam told Mr. Piro that he maintained a pretense of having those weapons mainly to keep Iran at bay.
Never mind Saddam had every intention of restarting his WMD programs once sanctions were lifted, as he admitted during interrogation. He gambled the threat of his then non-existent WMDs would keep Iran from getting any ideas. He saw Iran as the greater threat. He was wrong.
His smoke and mirror games convinced the wrong people he still had weapons of mass destruction. The world's intelligence agencies were fooled as well, so their reports to their governments said he still had them. In the end it proved his undoing.