In this Wednesday, Dec. 5, 2012 photo, smoke rises from residential buildings due heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)

Associated Press
In this Wednesday, Dec. 5, 2012 photo, smoke rises from residential buildings due heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)
In this Wednesday, Dec. 5, 2012 photo, smoke rises from residential buildings due heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)
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