Riot control agents

Riot control agents (RCAs) such as CS were the topic of long and heated debates during the CWC negotiations. At issue were their inclusion in the treaty and the restrictions that would be imposed upon their use.

In the end, a compromise was reached under which States Parties are to declare to the OPCW the RCAs they possess for law enforcement purposes. Though use is allowed for these purposes, it is prohibited as a method of warfare.

Furthermore, if a State Party considers that an RCA has been used against it as a method of warfare, it has the right to request assistance from the OPCW. Such a request will trigger an investigation of alleged use (IAU) by the Organisation, after which a decision will be made by the Executive Council regarding the provision of further assistance.