FILE - This undated file photo posted on Monday, Nov. 4, 2014 by the Raqqa Media Office of the Islamic State group, a militant extremist group, shows Islamic state group fighters in Kobani, Syria. With more than a thousand militants killed and territory slipping away, the Islamic State group is losing its grip on the Syrian border town of Kobani under intense U.S.-led airstrikes and astonishingly stiff resistance by Kurdish fighters. (AP Photo/Raqqa Media Office, File) (The Associated Press)
FILE - In this Monday, Nov. 17, 2014 file photo, smoke rises from the Syrian city of Kobani, following an airstrike by the U.S.-led coalition, seen from a hilltop outside Suruc, on the Turkey-Syria border. With more than a thousand militants killed and territory slipping away, the Islamic State grou...
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