Washington: No US-Russian deal “nailed down” yet for Aleppo

State Department officials told CBS News correspondent Margaret Brennan that direct talks are ongoing with the Russians in Geneva and there is no "deadline" for any agreement on cooperation, but the hope is to get something nailed down before President Obama and his Russian counterpart Vladimir Putin meet in early September.

The outlines of any intelligence sharing deal remain the same, she reports. Russia would need to get Syria to ground its air force for a few weeks before the US begins sharing intel on al Qaeda-linked rebels with Moscow.