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

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

As technology advances, so does the speed at which submarines can travel underwater. What are the five fastest submarines ...

The Balaklava submarine base was completed in 1961 when ... After the annexation of the Crimean peninsula by Russia in 2014, the base came under Russian control but continued operation as a ...

North Korea currently has an estimated 70 to 90 submarines, but most are old and can only launch torpedoes and mines, not ...

Moon estimates the submarine could be launched on a test run ... but Moon theorized it may have received help from Russia. The vessel appears to be up to 7,000-tons and can carry about 10 missiles ...

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

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