The New York Times reports: The United Nations special envoy for Syria on Friday called for urgent intervention by the United States, Russia and other powers to save fragile peace talks threatened by escalating hostilities and stalled negotiations.

The envoy, Staffan de Mistura, said a partial cease-fire that came into effect at the end of February was still in effect but “in great trouble if we don’t act quickly.” He added that a meeting of the International Syria Support Group led by Russia and the United States, which brokered the truce, was “urgently required.”

His comments came at the end of a week in which opposition negotiators pulled out of formal peace talks to protest mounting violations of the truce and the government’s refusal to allow deliveries of humanitarian aid to civilians trapped by fighting. [Continue reading…]