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    How would U.S. act in attack in Sochi?

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How would U.S. act in attack in Sochi?

The U.S. reaction to a potential terror attack in Sochi would be quick and multi-faceted. CNN's Barbara Starr reports.

How would U.S. act in attack in Sochi?

The U.S. reaction to a potential terror attack in Sochi would be quick and multi-faceted. CNN's Barbara Starr reports.