Rebel-on-Rebel Violence Seizes Syria

09/19/13

An al Qaeda spinoff operating near Aleppo, Syria's largest city, last week began a new battle campaign it dubbed "Expunging Filth."

The target wasn't their avowed enemy, the Syrian government. Instead, it was their nominal ally, the U.S.-backed Free Syrian Army.

Across northern and eastern Syria, units of the jihadist group known as ISIS are seizing territory—on the battlefield and behind the front lines—from Western-backed rebels.

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