Okay, let's say he's got WMD. Can he maintain, arm, aim and fire them if he has to constantly keep trucking them on the sly from hidden bunker to hidden bunker. Sure, it'll keep the UN inspectors busy for years to come, but the man is mortal, and we'd have hundreds of thousands of troops there for years to come if we invade. Forget all morality issues, isn't 10 (or 20, or more) years of cat and mouse easier and cheaper than war?