Yeah, he did have them at one point. But, the Gulf War and aftermath revealed to the world the nature of the program. What happened then was UN inspectors, UNSCOM, http://www.un.org/Depts/unscom/General/basicfacts.htmlGlory Days wrote:
you cant deny he didnt have them at one point, he actually used them. where did they go? Iran, Hamas, Syria, thousands of feet deep under the open desert? the point is, we didnt know. we couldnt take his word for it and its not like the inspectors looked anywhere but military facilities probably. and if we didnt think he had them at the time of the invasion, why did our forces spend most of the time in MOPP gear on the march up to baghdad? we had already invaded, why continue the show and hindering our forces if it was just all lies anyway?
http://www.fas.org/nuke/guide/iraq/missile/unscom.htm
effectively destroyed all of Iraq's stockpiles and then carried out inspections to ensure Iraq did not build up its program.
Interviews with Iraqi scientists afterward shows that UNSCOM severely limited their capabilities. Iraq was crippled and never recovered. There was a Foreign Policy article a few years ago that highlighted the fact that the Iraqi scientists, for fear for their life's, never told Saddam they simply did not have the capability to produce weapons.
So, where did they go, they were destroyed in 1991, 1992.