Aleppo On Eve of Battle: Clashes heat up in Syria key hub

Fighting continues in Syria's key city of Aleppo, with troops trying to halt a rebel advance. The country's commercial hub has been plagued by fierce street battles for several days, since opposition fighters began their assaults. RT's Oksana Boyko is one of the few international reporters still in Syria, and brings us the latest on the conflict. RT LIVE http://rt.com/on-air Subscribe to RT! ...