NATO has expanded its footprint in the North Atlantic, partially in response to an increased Russian submarine presence.

Add Yahoo as a preferred source to see more of our stories on Google. A Russian submarine was deployed alongside a spy ship to map critical undersea infrastructure around Britain, it has emerged. An ...

Vladimir Putin's submarines have been caught secretly mapping Britain's critical undersea infrastructure in a brazen espionage operation that has sparked sabotage fears. A Russian submarine was ...

Add Yahoo as a preferred source to see more of our stories on Google. Ukraine's internal security agency said it used an underwater drone to damage a Russian submarine. The agency described the attack ...

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 ...

Oct. 15 (UPI) --The Swedish military deployed fighter jets and a warship to shadow a Russian submarine after it entered the Baltic Sea on Tuesday and continues sailing toward a Russian port. The ...

If confirmed, Monday’s attack would be notable as it marked the first successful use of the Sub Sea Baby underwater drone against a Russian submarine. The Security Service of Ukraine (SBU) announced, ...

Forbes contributors publish independent expert analyses and insights. David Kirichenko is a journalist focusing on war and technology. UNSPECIFIED, UKRAINE - OCTOBER 17: An SBU operative controls a ...

A Russian submarine was deployed alongside a spy ship to map critical undersea infrastructure around Britain, it has emerged. An anti-submarine Merlin Mk2 helicopter could be seen from the photo ...