The attack on Skripal and his daughter, Yulia, in March last year was the first time chemical weapons had been used in Europe since the second world war
A riot control agent is defined as any chemical not listed in a schedule which can produce sensory irritation or disabling physical effects rapidly in humans and which disappear within a short time following termination or exposure.
The use of riot control agents as a method of warfare is prohibited by the CWC.'
Meanwhile, just across La Manche...M. Macron uses chemical weapons on his own people (sounds familiar...)