The United Kingdom thwarted a Russian submarine operation targeting critical undersea cables.

The British Ministry of Defense revealed Russian submarines recently conducted "nefarious activity" around underwater cables ...

U.K. forces thwarted what they believe was a covert operation by Russian submarines in the country’s Exclusive Economic Zone, ...

John Healey, the defense secretary, said the vessels were gathering information about undersea pipelines, and said he ...

The Russian submarine shadowed by the Swedish Gripens was transiting the Kattegat, a strategic waterway linking the Baltic ...

Britain and Norway have conducted a weekslong operation to deter Russian spy submarines near undersea cables in the North Atlantic.

The Akula class marked a turning point in undersea warfare. Built with raft mounted machinery, anechoic tiles, carefully ...

John Healey says the three Russian submarines "retreated" after being monitored by UK forces. He tells Russian President ...

The British military has exposed a covert Russian submarine operation in and around UK waters, forcing the vessels to retreat ...

British defence minister says the operation did not find evidence that Russia had damaged undersea infrastructure.

Russia deployed three submarines to spy on the UK's critical undersea pipelines in the northern Atlantic, British officials ...

NATO's chief said on Monday that there is a "lone and broken Russian submarine limping home from patrol" in the Mediterranean Sea.