NAPLES, Italy — NATO allies are strengthening their anti-submarine capabilities this week in the Baltic Sea, a region whose infrastructure network makes it susceptible to Russian mischief threatening ...

The race has intensified as the sea ice has been declining. It's one of the harshest environments on Earth. But the Arctic is also of growing strategic importance - where the U.S. is in a race with ...

China’s and Russia’s newly intensified naval partnership could embolden China in the South China Sea, where submarine activity is already intense. Russia and China are natural historical rivals. The ...