BEIRUT/NEW YORK Syria announced a new offensive against rebel-held areas of Aleppo on Thursday while diplomats failed to find a way in New York to revive a U.S. and Russian-brokered ceasefire that collapsed this week.
Warplanes mounted the heaviest air strikes in months against rebel-held districts of Syria's commercial hub and largest city, dealing a fresh blow to efforts to end Syrian civil war that has raged since 2011.
08:18 Russia, Turkey, Iran deliberate over Syria ceasefire efforts15
00:32 U.S. denies teaming up with Russia on Syria airstrikes15
22:24 Pentagon Denies Claim Of A Joint US-Russian Air Strike on Syria12
12:35 At Russia-led talks, Syrian rebels and government meet for the first time18