In this Tuesday, Nov. 6, 2012 photo, a Syrian rebel fighter takes cover a few meters away from the Castle, used as a military position by Bashar Assad's forces in the Old City of Aleppo, Syria.(AP Photo/Monica Prieto)

Associated Press
In this Tuesday, Nov. 6, 2012 photo, a Syrian rebel fighter takes cover a few meters away from the Castle, used as a military position by Bashar Assad's forces in the Old City of Aleppo, Syria.(AP Photo/Monica Prieto)
In this Tuesday, Nov. 6, 2012 photo, a Syrian rebel fighter takes cover a few meters away from the Castle, used as a military position by Bashar Assad's forces in the Old City of Aleppo, Syria.(AP Photo/Monica Prieto)
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