United Nations special envoy to Syria Staffan de Mistura speaks during a news conference in Damascus last month.
United Nations special envoy to Syria Staffan de Mistura speaks during a news conference in Damascus last month. Uncredited SANA<137>/AP<137>
United Nations special envoy to Syria Staffan de Mistura speaks during a news conference in Damascus last month. Uncredited SANA<137>/AP<137>