OPCW confirms Russia likely used riot control agent CS gas in Ukraine

The Organisation for the Prohibition of Chemical Weapons (OPCW), the international chemical weapons watchdog, has confirmed that Russian forces likely used the toxic chemical 2-chlorobenzylidenemalononitrile – the main component of tear gas also known as CS gas – in September in its war on Ukraine. This use of such riot control agents as a method of warfare violates the Chemical Weapons Convention that the OPCW implements, the organisation stated.