His comments came after Russia disclosed the test of its long-range nuclear-powered cruise missile. It's the second time in a matter of months that Trump brought up submarines in response to Russia.

The mysterious yellow submarine spotted off California turned out to be a full-scale Navy test target designed to simulate North Korean threats. After years of torpedo trials, a malfunction sent the ...

An unarmed Trident II D5 Life Extension missile launches from an Ohio-class ballistic missile submarine off the coast of Florida during a planned test event from Sept. 17-21. (U.S. Navy) The U.S. Navy ...

SEOUL, May 9 (Reuters) - North Korea said on Saturday it has successfully conducted an underwater test-fire of a submarine-launched ballistic missile, which, if true, would indicate progress in the ...

Russia's Project 09851 submarine Khabarovsk, designed to deploy the Poseidon nuclear torpedo, may begin sea trials in 2026.

President Donald Trump said on Monday that the US has a nuclear submarine right off Russia's coast. His comments came after Russia disclosed the test of its long-range nuclear-powered cruise missile.