Germany's Foreign Minister Heiko Maas on Monday demanded an explanation from Syria's government after an investigation from a global watchdog said the regime used the chemical weapon chlorine in a 2018 attack. "For us, it is clear that such an obvious violation of international law cannot remain without consequences," Maas said in a statement following the release of the report by the Organisation for the Prohibition of Chemical Weapons (OPCW). yap/kjl/jj