I mean.... Iraq didn't have them until we sold them the precursor chemicals to make them. What they were really upset about was that Saddam was supposed to use all those to kill Iranians and then the Kurds.

You do a guy a favour by helping him eliminate any of his dissonance and what do you get in return? The guy tries to invade Kuwait to pay off all the money he owes for invading Iran. When did empowering ruthless dictators to do your bidding get so complicated?