Residents walk past buildings damaged during heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria, on Sunday, Dec. 2, 2012. (AP Photo/Narciso Contreras)

Photo by: Narciso Contreras

Residents walk past buildings damaged during heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria, on Sunday, Dec. 2, 2012. (AP Photo/Narciso Contreras)