Ukraine has used U.S.-made chemical weapons - Russia --Moscow claims that Washington and Kiev have violated the articles of the Organization for the Prohibition of Chemical Weapons | 19 Feb 2024 | Washington and Kiev have violated articles of the Organization for the Prohibition of Chemical Weapons (OPCW) as Ukrainian forces have used illegal munitions on the battlefield, Russian Lieutenant General Igor Kirillov has claimed. The head of Russia's Nuclear, Chemical and Biological Protection Forces provided several examples of Kiev's alleged use of banned chemical weapons and non-lethal chemical agents that he said were obtained from the U.S. Kirillov claimed that Ukraine used drones to drop U.S.-made gas grenades on December 28, 2023 containing "CS" compound - a chemical classified as a riot-control tool that irritates the eyes and upper respiratory tract, and can cause skin burns, respiratory paralysis and cardiac arrest when used in high concentrations.