In this Wednesday, Nov. 14, 2012 photo, Syrian rebel fighters keep an eye through a hole in the wall that overlooks a position held by troops loyal to Syrian President Bashar Assad during skirmishes in Aleppo, the Syria. (AP Photo/Narciso Contreras)

Photo by: Narciso Contreras

In this Wednesday, Nov. 14, 2012 photo, Syrian rebel fighters keep an eye through a hole in the wall that overlooks a position held by troops loyal to Syrian President Bashar Assad during skirmishes in Aleppo, the Syria. (AP Photo/Narciso Contreras)