Oh man, this is good. Ok first of all, you should probably try to use the most relevent treaty if you want to get pissed about things. I would start with the Chemical Weapons Convention (CWC) which enetered into force in 1997. But this isn't a clear violation of that. If you are referening to the aspects of the Geneva protocals that pertain to the use of chemical and biological weapons, this is clearly not a violation, since that document concerns itself only with the USE of these weapons by a nation.
Or were you refering to some other treaty?
Like I said, I'd be interesting to see where the story goes, but at this point, and with the information presented thus far, it is a non story.
-Sikboy