ISIS on offensive despite U.S. strikes

Iraqi Kurdish Peshmerga fighters fire at ISIS militant positions from the front line in Khazer, near the Kurdish checkpoint of Aski kalak, west of Arbil, the capital of the autonomous Kurdish region of northern Iraq, on Thursday, August 14.
Iraqi Kurdish Peshmerga fighters fire at ISIS militant positions from the front line in Khazer, near the Kurdish checkpoint of Aski kalak, west of Arbil, the capital of the autonomous Kurdish region of northern Iraq, on Thursday, August 14.

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    ISIS on offensive despite U.S. strikes

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A U.S. Intelligence official says that ISIS views conflict with the U.S as inevitable. CNN's Barbara Starr reports.