That the WMDs were not used so far is entirely because of US policy to make threats mean something.
We have told the field commanders in extremely plain language that using WMDs will bring the wrath of God down on the users.
We have spent a great deal of effort disrupting the Iraqi command and control system as thoroughly as possible.
We have captured infrastructure they would have used to deploy WMDs in many cases.
The Inspection effort did not dispose of any WMDs, nor did it prevent the use of any, except for the rockets that Blix avoided discussing in his report that the US raised hell over.
Ed