U.S. Ambassador to the United Nations Nikki Haley checks her mobile phone outside the Security Council chamber during a 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)