Ukraine has accused Russia of stepping up frontline attacks using prohibited hazardous chemicals, including tear gas, the latest in a series of allegations of battlefield abuses. Moscow and Kyiv have accused each other of carrying out war crimes and deploying banned chemical munitions throughout the Russian war in Ukraine, now in its third year. The Ukrainian military said on June 24 that it had registered 715 cases of the use of munitions containing "hazardous chemical compounds" by Russian forces in May. It said that figure represented an increase of 271 cases compared to the month before.