The mission, dubbed Baltic Sentry, follows worry over increased Russian military activity near key undersea communication ...

Beneath the cold, dark waves of the Baltic Sea, a hidden piece of history lurks ... and human divers to explore the bay, and map the true extent of the structure. The data collected revealed ...

Estonian naval ships are taking part in stepped-up patrols in the Baltic Sea by NATO countries after undersea power and communications cables have been damaged in recent months.