UNITED NATIONS—The U.N. Syria peace mediator warned on Wednesday that a recent increase in violence has created one of the most dangerous moments in years of civil war there, as the government bombards rebel areas and foreign powers further intervene.
“I have been now four years (as) special envoy, this is a violent and worrying and dangerous a moment as any that I’ve seen in my time,” Staffan de Mistura told the United Nations Security Council.





