Russia's Yasen-M submarines and militarized Kola Peninsula are forcing NATO to confront a growing undersea threat across the ...

This hybrid campaign is all the war Russia wants or needs—and stoking fear that Moscow just might directly strike Ukraine’s ...

Britain caught Russian submarines testing a secret new weapon designed to disable critical undersea cables, it has emerged.

A recent U.S. intelligence assessment indicates that Russia could test NATO’s resolve over the next few years with a limited ...

Recent US intelligence assessments indicate Russian President Vladimir Putin could try to test NATO’s resolve by launching a limited attack on an allied country within the next few years, according to ...

The operation was carried out by Russia's Main Directorate for Deep Sea Research (GUGI), which used deep-sea submersibles to simulate deploying the technology, according to two Western officials who ...

In an exclusive interview with USA TODAY, U.S. Ambassador to NATO Matt Whitaker said allies must prepare in case Russia's ...

The clandestine Russian operation was carried out by Moscow's GUGI undersea warfare directorate to test a destructive ...

NATO has been forced to scramble fighters following brutal overnight strikes on Kyiv, triggering doubts over startling US ...