You replied: Bush should tell the UN on the 12th that if a WMD is used on the US, we won't wait to specifically ID who it was. We will drop nukes on Mecca and Medina. We'll use neutron bombs (or current equivilent) on Iraq, Iran, Syria and Lebanon. Then we'll start trying to ID where the WMD came from.
This would be a big mistake. Not only won't it work, but, in fact, such a policy is likely to cause us to be attacked.
Here's why: If we announce that we will respond to any WMD attack on the U.S. by attacking country X (without having first determined that X is, in fact, the country that attacked us), then we have just given X's enemy Y a powerful incentive to attack us with WMD.
I want to clarify that this has nothing to do with the particular countries you named for X, or with the choice of X and Y at all. The point is that, very generally, this sort of policy (of retaliation before identifying an aggressor) will fail to keep us safe.