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 ...

Putin said peace with Ukraine remains possible while calling Kyiv’s warning on Russian airspace “state terrorism,” as NATO ...

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

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

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 ...

“Putin is not looking to attack NATO territory,” the president told reporters at the White House on Friday.

A string of gray-zone attacks orchestrated by Moscow is tempting the alliance’s European members to escalate.

NATO Chief has accused Russia of trying to divide the alliance, but the claim comes as growing disagreements expose deep ...

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