Civil defense groups in Syria have accused Bashar al-Assad of using chlorine gas in at least 35 attacks on civilians since mid-March, the Guardian reports. “Whenever the regime loses an area or a city it arbitrarily takes revenge on civilians,” said White Helmets’ leader Raed Saleh. “It is targeting civilians.”

Kurdish authorities in Iraq say that ISIS used chemical weapons in a January 23 suicide attack against peshmerga fighters, the Associated Press reports.