In this Wednesday, Dec. 5, 2012 photo, Free Syrian Army fighters aim their weapons inside an abandoned building during heavy clashes with government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)

Associated Press
In this Wednesday, Dec. 5, 2012 photo, Free Syrian Army fighters aim their weapons inside an abandoned building during heavy clashes with government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)
In this Wednesday, Dec. 5, 2012 photo, Free Syrian Army fighters aim their weapons inside an abandoned building during heavy clashes with government forces in Aleppo, Syria. (AP Photo/Narciso Contreras)
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