The submarine could significantly escalate security concerns on the Korean peninsula and in the Taiwan Strait, experts say ...

Kim Jong Un is aiming to increase North Korea's nuclear weapons capability as the U.S. remains cautious about the country's ...

North Korea has conducted a slew of underwater-launched ballistic missile tests since 2016, but all launches were made from ...

North Korea has unveiled for the first time what it says is a nuclear-powered submarine under construction, a weapons system ...

The announcement came amid fears that Pyongyang may be receiving crucial military technology from Russia in return for sending troops and weapons for its war against Ukraine.

North Korea could be building a nuclear-powered submarine, possibly with Russian help, raising security concerns for the US ...

The nation currently has no nuclear submarines and uses dozens of old diesel-powered Soviet submarines. A nuclear submarine would enable North Korea to go long distances underwater without needing ...

Moon, the submarine expert, said North Korea may have received Russian technological assistance to build a nuclear reactor to be used in the submarine in return for supplying conventional weapons ...