The European Association for Chemical and Molecular Sciences, EuChemS, condemns in the strongest possible terms the continuing use of chemical weapons in the Syrian conflict. It calls on the perpetrators to be tried for War Crimes at the earliest possible moment. The use of chemical weapons is a Crime against Humanity of the severest kind and no one who orders attacks using chemical weapons should be allowed to remain free. We further call on all parties in the Syrian conflict immediately to inform the Organisation for the Prohibition of Chemical Weapons (OPCW) of all know stockpiles of chemical weapons held by them or their opponents and to allow them to be removed and destroyed at the earliest possible opportunity.