i think it might have something to do with the traceability of most wmd's and wmd components. i was under the impression that the storage containers needed for most of the chemicals needed to make things like sarin gas usually bear the seal of the pharmaceutical company that produced them. i'll say again that i'm not entirely sure about this. but i think it is safe to say that the media circus surrounding any such discovery would be tenfold if a container of mustard gas was found to bear the markings of pfeizer. hasn't it already been shown that america was responsible for kickstarting iraq's chemical weapons program? or was that france? germany? i can never remember.