CCTV9英语新闻：International negotiators hope to revive Syrian ceasefire（在线收听）

(L to R) Russian Foreign Minister Sergei Lavrov, U.S. Secretary of State John Kerry and UN Special envoy for Syria Staffan de Mistura attend a meeting of the International Syria Support Group on Syria in Vienna, Austria, May 17, 2016. (Xinhua/Qian Yi)

Photo taken on May 17, 2016 shows the meeting of the International Syria Support Group on Syria in Vienna, Austria. (Xinhua/Qian Yi)

Xie Xiaoyan (L front), China's envoy to the International Syria Support Group (ISSG), attends the meeting in Vienna, Austria, May 17, 2016. (Xinhua/Qian Yi)

Russian Foreign Minister Sergei Lavrov (L), U.S. Secretary of State John Kerry (C) and United Nations special envoy on Syria Staffan de Mistura attend a press conference after a meeting of the International Syria Support Group on Syria in Vienna, Austria, on May 17, 2016. (Xinhua/Qian Yi)