I was under the impression that the shelf life on most of these WMDs (chemical nerve agents) is only 5 years or so. So we had a pretty good idea about what Sadd

I was under the impression that the shelf life on most of these WMDs (chemical nerve agents) is only 5 years or so. So we had a pretty good idea about what Saddam was holding, but they were almost certainly unusable at the time of the invasion.