Moscow is growing its footprint at the top of the world, working with China—and leaving the U.S. behind.

One of Russia’s latest warships is holding large-scale live-fire drills in the Baltic Sea amid mounting regional tensions with NATO. “As part of the planned deployment to the sea, the ...

The Baltic Sea operation in the region bordering Russia comes as European fears of sabotage mount after a string of disruptions to underwater cables.

Greenland, home to a large U.S. military base, is an autonomous territory of Denmark, a longtime U.S. ally and a founding member of NATO ... to ban offshore energy drilling in most federal ...