Thomas Markram (front), deputy to United Nations Undersecretary-General for Disarmament Affairs Izumi Nakamitsu, briefs the UN Security Council meeting on the situation in Syria at the UN headquarters in New York, April 9, 2018. The Security Council held an emergency session on the situation in Syria, particularly after reports of the use of chemical weapons over the weekend in rebel-held Douma near the capital city of Damascus. (Xinhua/Li Muzi)