This is very interesting to me. I think I recall the french making similar statements during the 91 gulf war. I had a professor who suggested that what might have kept Iraq from using Chem/Bio weapons was a suggestion by US diplomats that the US would not change the war aims to include regime change in Iraq, UNLESS they used WMD. Before the citation goblins come running, lets just call this hypothetical (since, after all, I have no citations to give). I remember some people thinking that Kim Il Sung might be zonkers enought to use WMD from his death bed (the again, we were in Japan at the time, and given to paranoia). But none the less, I do wonder if Iraq might use WMD if faced with imenent regime change? "take one for the team" as it were.
-Sikboy