US President Donald Trump and Russian President Vladimir Putin have spent weeks trading threats to restart nuclear tests, an escalation kicked off by Putin’s boasts about tests of the Poseidon nuclear ...

While Russia and the U.S. are still abiding by some arms-controls limits, such as the New Start treaty that expires in ...

Amid rising tensions after the cancellation of the Hungary summit, a senior Kremlin aide said on Sunday that the outcomes of ...

Russia said on Friday it remains open to the idea of a summit with the United States in Budapest if it is properly prepared ...

Marco Rubio told reporters Wednesday that nuclear testing plans are "on par with what other countries are doing." ...

The Coast Guard detected a Russian intelligence ship near U.S. waters off Hawaii, prompting a military response and ongoing ...

The Russian military vessel, Kareliya, was spotted roughly 15 nautical miles south of Oahu — near US territorial waters — on ...

Washington ensures uninterrupted operations of most Lukoil international assets as it gives more time for potential bidders ...

The U.S. Typhon missile system can conduct land-attack missions with 1,000-mile-range Tomahawk cruise missiles.

Military capability of Western alliance remains 'formidable' despite questions around US commitment to untested 'mutual ...

An impasse over Russian oil and imminent US sanctions has put Serbia at loggerheads with its traditional ally in Moscow.