Somewhere in the cold waters of this archipelago in the Baltic Sea....a foreign submarine may be staying out of view.<br/> <br />At least, that's what Swedish authorities think, after what they say were several credible sightings of an underwater vessel in these waters some 50 kilometers, or 30 miles, off of Stockholm.<br/> <br />More than 200 Swedish military personnel are patrolling the area and local media say civilian boats have been told to stay away.<br/> <br />The military operation to hunt this mysterious vessel is Sweden's largest such mobilization since the Cold War.<br/> <br />It's reawakened memories of the final years of that east-west conflict, when Sweden used depth charges to flush out Soviet submarines along its coast.<br/> <br />THIS is the craft the military thinks it's looking for.<br/> <br />The military says it could be a submarine or a "moped-like" underwater vehicle.<br/> <br />Whatever it is, the government says, it doesn't have any business in Swedish territory.<br/> <br />It's all happening as tens
