Russian military morale has plunged so far that sailors are now reportedly sabotaging their own submarines to get to sleep, according to an extraordinary claim from former Ukrainian interior ministry ...

Images of a Russian nuclear-powered submarine that docked in Havana last week for military drills appear to show some damage to its hull, raising questions on social media.

A new Ukrainian video poked fun at Russia for losing the Rostov-on-Don, a key submarine likely damaged beyond repair in an attack last week.

The Russian military official was shot dead by an unknown assassin while on his morning run after appearing on a Ukrainian blacklist website.

New photos of what is said to be a Russian submarine targeted in a Ukrainian missile attack show severe and widespread damage to its exterior, and possibly interior.

Ukraine’s military has claimed it sank a Russian submarine in a port in Crimea, in what would be another major setback for Moscow in the occupied peninsula.

The U.K. Royal Navy recently monitored a surfaced Russian submarine as it sailed through the North Sea and English Channel, ...

The Severodvinsk class of submarine is also known as the Yasem-M, and carries an anti-ship hypersonic missiles that can travel a mile per second.

As NATO members sound the alarm, an expert tells Newsweek Russia's current submarine activity is as dangerous as Cold War levels in terms of sheer volume.

A fearsome attack submarine is being built that could help fight Russian forces. A Ukrainian company based in the UAE have completed a prototype of the Kronos stealth vehicle. Highland Systems ...

A Russian military official who commanded a submarine in the Black Sea and appeared on a Ukrainian blacklist of alleged war criminals has been shot dead by an unknown assassin while on his morning ...

One of Russia's nuclear-powered submarines, named Belgorod, has reportedly vanished from its Arctic harbor, and Western countries fear it could be gearing up to test its advanced weapons systems ...