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Two Swedish Navy fast-attack craft patrol the Stockholm Archipelago October 19.
Two Swedish Navy fast-attack craft patrol the Stockholm Archipelago October 19.

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    How hunt for foreign sub unfolded

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How hunt for foreign sub unfolded

An intense search is underway in the Baltic Sea for a suspected Russian submarine. CNN's Michael Holmes reports.

How hunt for foreign sub unfolded

An intense search is underway in the Baltic Sea for a suspected Russian submarine. CNN's Michael Holmes reports.