U.N. envoy urges Obama, Putin to save Syria truce, peace process

U.N. mediator Staffan de Mistura

The United Nations mediator on Thursday called on the leaders of the United States and the Russian Federation to salvage the "barely alive" two-month-old ceasefire in Syria and revitalize the damaged peace process.

U.N. Special Envoy Staffan de Mistura voiced deep concern at the truce unraveling in Aleppo and at least three other hotspots, although he saw some narrowing of positions between the government and opposition visions of political transition.