I have posted about this a time or two before.
Iraq made everyone believe that they had WMD's solely for the purpose of keeping Iran from invading. They developed some and conveniently used some just to scare Iran. Looks like he had us all fooled until the US called Saddam bluff. But, people in the US are still being fooled by his. Wake up, people!
There was an article in "Wired" that did a very good job of explaining this.
