AdvertisementThe Deadly Checkpoint That Divides Syria's Biggest CitySeptember 06, 2013Lava SelofacebookEmailSyrian rebel fighters run run for cover during clashes Wednesday with government forces in Aleppo. Syria's largest city has been bitterly divided since heavy fighting broke out more than a year ago. The government army controls the western part of the city; the rebels control the east. Residents risk sniper fire as they cross back and forth. (AP)