LAUSANNE, Switzerland — Back where they started, the United States, Russia and others trying to help mediate Syria's civil war are searching for a diplomatic process that could succeed where last month's collapsed cease-fire failed.
With the Syrian and Russian governments pressing an offensive against rebel-held parts of the city of Aleppo, no one was predicting a quick breakthrough.
00:18 Russia and Syria pause in bombing of rebel-held sections of Aleppo
12:28 Syrian army and Russian jets halt Aleppo bombardment for second day
22:36 Wary of Russian Guarantees, Residents Stay Put in War-Torn Aleppo
14:04 Turkey unleashing fury of airstrikes against US-backed Syrian Kurdish forces