Bush should make it clear that any Chemical Attack and from this point on we dip all bullets in pig's blood and no Iraq soldiers is going to Paradise. Bush has stated that ALL options are on the table, including nuclear. Stories published in the NYT, etc. have also stated that if Iraq uses WMD, tactical nukes were a likely response.
Absolutely. If the reports about deployment of chemical or biological warheads with the Medina Division are true
and if some lunatic executes an order delivering any such weapons on coalition forces, the Iraqis should expect a tactical nuclear (low kilotonnage/low yield) response that would essentially annihilate all hostiles attached to the Division. This would be folowed up with an immediate demand for unconditional surrender or the remaining Republican Guard Divisions would be subjected to the same.
Do not underestimate the importance of maintaining the absolute certainty of the doctrine of nuclear deterrence. Relaxing it in even one instance may embolden the next Saddam. Can you imagine a field subordinate executing a deployment order of WMD if it is a certainty that the release will be met with an immediate and catastophic nuclear response? Neither can I.