SEOUL--North Korea has launched its first operational “tactical nuclear attack submarine” and assigned it to the fleet that patrols the waters between the Korean peninsula and Japan ...

To his and the nation's pride, the DPRK has its very own tactical nuclear submarine, and if the reports are accurate, it's somewhat comparable to the United States' own Ohio-class nuclear ...

Target range and bearing data is downloaded from the submarine’s tactical data system and weapon control system into the Exocet’s computer. The missile approaches the target area in sea ...