China and Russia, America’s top two global adversaries, are working together as never before, probing the defenses of the U.S ...

Initially believed to be a cold, arid grassland, the stretch more resembled the modern-day Yukon-Kuskokwim floodplain.

Poking holes in the sea floor that used to be part of the Bering Land Bridge, researchers have found that large swaths of it ...

The Russian "package," which included armed Su-35 Flanker-E fighters, was intercepted on two consecutive days in international airspace west of Alaska. On ...