What you posted never said all seirn or anything that once was seirn is a wmd!
Contrary to your beliefs, the CWC and UN don't go by what I say any more than they go by what Duelfer and Kay say, so it doesn't matter what I think constitutes a WMD. What matters, is what is in the CWC and GC, which was signed by numerous countries, including the ones we are talking about. They specifically list Sarin as a chemical weapon, the GC labels this type of weapon as a "weapon of mass destruction" and neither body recognizes age of Sarin as a valid criteria for definition, nor do they recognize what you, Duelfer, Kay, or maineman think should be considered a WMD. Furthermore, the CWC establishes what criteria a WMD has to meet, to be considered an "old munition" as you are trying to apply to these particular Sarin bombs, and they say the weapon must have been made prior to 1946, so they lack about 40 years qualifying as an "old WMD munition."
Sarin is a chemical developed for the sole purpose of being a WMD. It's not produced for any other reason by anyone. To arm munitions with Sarin, is to create a WMD, and this device will be a WMD until it is destroyed, using the guidelines established by the CWC for destroying WMDs, not dunkin donuts. Now, you can reside in some liberal fantasy land, where Sarin isn't a
real WMD, and old WMD's aren't
really WMD's, and you can make all the simple-minded observations and express all the bird-brain opinions you like, Sarin bombs are still WMD's, and will be WMD's until they are destroyed.