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tsr dnt starr isis foreign fighters_00011114.jpg

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    New U.S. worry: ISIS foreign fighters

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New U.S. worry: ISIS foreign fighters

1,000 new foreign fighters have streamed into Iraq and Syria in just the last six weeks. CNN's Barbara Starr reports.

New U.S. worry: ISIS foreign fighters

1,000 new foreign fighters have streamed into Iraq and Syria in just the last six weeks. CNN's Barbara Starr reports.