A Free Syrian Army fighter aims his weapon during heavy clashes with government forces in Aleppo, Syria, on Wednesday, Dec. 5, 2012. (AP Photo/Narciso Contreras)
A Free Syrian Army fighter aims his weapon during heavy clashes with government forces in Aleppo, Syria, on Wednesday, Dec. 5, 2012. (AP Photo/Narciso Contreras)
A Free Syria Army fighter receives treatment Dec. 3, 2012, at a makeshift clinic during clashes with government forces in Aleppo, Syria. (Associated Press)
A Free Syria Army fighter receives treatment Dec. 3, 2012, at a makeshift clinic during clashes with government forces in Aleppo, Syria. (Associated Press)
Residents of Aleppo, Syria, collect their belongings after their home was damaged in heavy fighting between Free Syrian Army fighters and government forces on Sunday, Dec. 2, 2012. (AP Photo/Narciso Contreras)
Residents of Aleppo, Syria, collect their belongings after their home was damaged in heavy fighting between Free Syrian Army fighters and government forces on Sunday, Dec. 2, 2012. (AP Photo/Narciso Contreras)
A man collects his belongings after his home was damaged in heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria, on Sunday, Dec. 2, 2012. (AP Photo/Narciso Contreras)
Smoke rises from buildings during heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria, on Saturday, Dec. 1, 2012. (AP Photo/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)
