More On Russia

A Russian fighter came within a half-mile of a U.S. warplane over Syria on the first day of the Mosul offensive, officials...

President-elect Donald Trump's renewed criticism of NATO widened a potential rift with Defense Secretary-designate James...

Russian warplanes bombed a U.S.-supported force in northeastern Syria and inflicted casualties, an official said.

A Russian warship may be nearing two U.S. destroyers, but so far interactions at sea have been strictly professional.

An armed Russian fighter jet flew alarmingly close to a U.S. Navy reconnaissance aircraft flying in the Black Sea on Tuesday.

Two B-1B Lancer bombers and one B-52 Stratofortress touched down at at Royal Air Force Fairford in the United Kingdom on...

Russia planned to send its only aircraft carrier on a port visit to Syria later this year in a sign of Moscow's long-term...

The passage of the destroyer USS Truxtun into the Black Sea was seen as a challenge to the Russian fleet.

The U.S. said Moscow must stop backing pro-Russian militants in eastern Ukraine or face tougher economic sanctions.

Defense Department funds bought supplies including concertina wire for Ukraine's border guards.