U.S. Ambassador to the United Nations Nikki Haley gestures to Swedish UN ambassador Olof Skoog (not in the picture) prior to voting on a resolution demanding a ceasefire across Syria at the UN headquarters in New York, on Feb. 24, 2018. The UN Security Council on Saturday unanimously adopted a resolution demanding a ceasefire of at least 30 days across Syria that would allow humanitarian access and urgent medical evacuation. (Xinhua/Li Muzi)