Islamic State Oil Refineries in Syria Hit in Airstrikes

Lt. Gen. William Mayville, director for operations for the Joint Chiefs of Staff, shows before and after photos as he speaks on the airstrikes in Syria during a briefing at the Pentagon in Washington, D.C., on Sept. 23, 2014.

Photographer: Brendan Smialowski/AFP/Getty Images

Sept. 25 (Bloomberg) -- Kurdish fighters battled to halt an advance by Islamic State in northern Syria, while in the east of the country the oil refineries that are a key money-spinner for the militant group were targeted by U.S.-led airstrikes.

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