In this Thursday, Nov. 1, 2012 photo, rebel fighters watch over enemy positions as they wait for Syrian army troops to enter a street during clashes in the Karmal Jabl battlefield in Aleppo, Syria. (AP Photo/Narciso Contreras)

Photo by: Narciso Contreras

In this Thursday, Nov. 1, 2012 photo, rebel fighters watch over enemy positions as they wait for Syrian army troops to enter a street during clashes in the Karmal Jabl battlefield in Aleppo, Syria. (AP Photo/Narciso Contreras)