The way the mustard gas shells will be explained is that they were overlooked parts of Iraq's vast arsenal that was routinely used against Iran in that war. It will work that way unless the documents reveal more recent manufacture ot indications that these were specifically hidden and not simply overlooked.
If any of the documents reveal a discovery of EMPTA or VX nerve gas THAT could be explosive! Clinton bombed Sudan over the reported presence of EMPTA at a Pharmaceutical Plant there.
The way the mustard gas shells will be explained is that they were overlooked parts of Iraq's vast arsenal that was routinely used against Iran in that war. You are undoubtedly right. Following that logic; if I own weapons that are prohibited by law, but they have been in my possession for years, then they are no threat to anyone and there should be no cause to confiscate them and arrest me.