An Ahrar al Sham fighter manned an anti-aircraft gun in a photo taken in August 2012.
An Ahrar al Sham fighter manned an anti-aircraft gun in a photo taken in August 2012. David Enders Tribune Content Agency
An Ahrar al Sham fighter manned an anti-aircraft gun in a photo taken in August 2012. David Enders Tribune Content Agency

U.S. struggling over what to do with Syrian rebels once tied to al Qaida

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