As it tried to demonstrate its continuing ability to fight, Ukraine said it had used drones to inflict serious damage on a Russian Kilo-class submarine at a Black Sea port. By Maria Varenikova ...

The British navy said Thursday it tracked a Russian submarine navigating through the English Channel for three days, as it steps up efforts to police its seas against such threats. A British naval ...

Ukraine says underwater drone strike is historic first Russia denies attack caused any damage Attack hits Kilo-class, missile-carrying submarine Vessel was in Russia's Novorossiysk port in Black Sea ...

South Korea wants to join the undersea naval elite – and has received the blessing of US President Donald Trump to do just that. Having Seoul become the seventh country in the world operating ...

Ukraine’s domestic security service, the SBU, said Monday that it had carried out an attack on a Russian submarine in the Black Sea port of Novorossiysk, causing critical damage to the vessel and ...

The mystique of nuclear-powered submarines has been captured by at least half a dozen popular Hollywood films. Some have centered on the drama of undersea warfare and the risk of global nuclear ...

Seoul, South Korea (CNN) — North Korea on Thursday released new images of what it claims is its first nuclear-powered submarine, a massive vessel equal in size to some of the United States Navy’s ...

Seoul, South Korea (CNN) — South Korea wants to join the undersea naval elite – and has received the blessing of US President Donald Trump to do just that. Having Seoul become the seventh country in ...