"Rhetoric sometimes turns into action in unpredictable ways," a former senior U.S. arms control official told Newsweek.

COMMENT: Steve Witkoff - the president’s international diplomatic Mr Fixit - has failed to bring peace to the Middle East or ...

The Russian and Chinese militaries practiced destroying an "enemy" submarine during joint naval drills Wednesday, just days after President Donald Trump moved a pair of nuclear submarines toward ...

But beginning in the 1970s, American and Soviet leaders started taking steps toward de-escalation, leading to a handful of ...

K-555 Knyaz Pozharsky is a Project 955A Borei–A–class vessel, a crucial component of the Kremlin's nuclear triad.

Russia has declared it will no longer observe self-imposed restrictions on deploying medium- and short-range missiles, ending ...

President Trump is rattling the U.S.’s formidable nuclear saber amid his growing frustration with Russian President Vladimir ...

A nuclear submarine base in Russia's remote Far East region was damaged last week following one of the most powerful ...

The Rybachiy base, which hosts nuclear-powered submarines from Russia’s Pacific Fleet, lies in a cove about 80 miles from the ...

A tsunami triggered by an undersea earthquake off the coast of Russia's Kamchatka Peninsula on July 30 appears to have ...

Satellite imagery appears to show damage to Russia's Rybachiy nuclear submarine base following a July 30 tsunami.

The Project 955A Borei-class ballistic missile submarine Knyaz Pozharsky entered service less than two weeks ago.