In this Saturday, Dec. 1, 2012 photo, smoke rises from buildings due 

In this Saturday, Dec. 1, 2012 photo, smoke rises from buildings due to heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)
Associated Press
In this Saturday, Dec. 1, 2012 photo, smoke rises from buildings due to heavy fighting between Free Syrian Army fighters and government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)
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