..the Pentagon confirmed it was authorising use of “non-lethal” gases of the type used in last October’s disastrous Moscow theatre siege — a move that has already provoked accusations of hypocrisy by a country that claims to be at war to prevent chemical weapons being used.
From theindependent, and commented on in Taking The Gloves Off, where it says:
In accordance with my USMC training, I’d always been told that ALL chemical weapons, including non-lethal “riot control style” agents were strictly forbidden in combat according to the UN Chemical Weapons Convention.