Good point. If we find them, I hope we find them hidden somewhere. On the other hand, I don't really see why we care about WMD. Most of that stuff is relatively easy to manufacture (except for nuclear). Some might say that they aren't so easy, but that's not really true. The difficult part is the knowledge on how to manufacture. The scientists that worked on these projects retain the knowledge of the process. The next regime will have these resources, or else they may go to the highest bidder. Would Osama really have difficulty finding some location to manufacture chemical or biological weapons once he has some people experienced in that process?