UN chief warns of full-blown military escalation in Syria

China's Permanent Representative to the United Nations Ma Zhaoxu (C, Front) addresses a Security Council meeting at the UN headquarters in New York, on April 13, 2018. Ma Zhaoxu on Friday called on parties concerned to remain calm and exercise restraint over the situation in Syria. The current situation in Syria is perilous, Ma told a Security Council meeting requested by Russia, adding that it's at a crossroads of war and peace. (Xinhua/Li Muzi)