This file photo provided by the anti-government activist group Aleppo Media Center (AMC) shows a Free Syrian Army fighter aiming his weapon during a battle with Islamic State militants in Aleppo, Syria. Members of the Islamic State group have been marching in the northern province of Aleppo capturing areas under the control of the mainstream Free Syrian Army. (AP Photo/Aleppo Media Center AMC)
This file photo provided by the anti-government activist group Aleppo Media Center (AMC) shows a Free Syrian Army fighter aiming his weapon during a battle with Islamic State militants in Aleppo, Syria. Members of the Islamic State group have been marching in the northern province of Aleppo capturing areas under the control of the mainstream Free Syrian Army. (AP Photo/Aleppo Media Center AMC) AP
This file photo provided by the anti-government activist group Aleppo Media Center (AMC) shows a Free Syrian Army fighter aiming his weapon during a battle with Islamic State militants in Aleppo, Syria. Members of the Islamic State group have been marching in the northern province of Aleppo capturing areas under the control of the mainstream Free Syrian Army. (AP Photo/Aleppo Media Center AMC) AP

Tense relations between U.S. and anti-Assad Syrian rebels

September 05, 2014 07:32 PM

UPDATED September 01, 2014 04:22 PM

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