NATO countries sharing the strategically important Baltic Sea with Russia have boosted their presence there and are beefing up their navies.

Sweden's submarines are small and quiet, perfect for the Baltic Sea that many NATO allies share with Russia.

In recent weeks, Russian troops carried out a series of military exercises off the coast of Kaliningrad, Russia’s exclave ...

ABOARD THE HNLMS LUYMES—Belgian Navy Commander Erik Kockx was patrolling the Baltic Sea recently when he got word that a ship on NATO’s watchlist was acting in a suspicious manner. After ...

None has occurred since NATO began patrols ... Hill spent 14 hours aboard a French naval plane as it patrolled the Baltic Sea, monitored commercial shipping lanes and came into close contact ...

Moscow’s intel chief warned on Tuesday that Poland and the Baltic states would be “the first to suffer” in the event of a NATO attack ... Poland and the Baltic countries.” ...

For decades the Baltic Sea has served as a delicate buffer zone between a growing number of NATO members and Russia, more recently becoming a new front line for symmetric and asymmetric threats ...

NATO has been using ships and aircraft to monitor the Baltic Sea since January. The move came after undersea power lines and communication cables were severed. Some nations suspect that Russia was ...

One of the Kremlin’s newest threats, according to NATO, is targeting undersea cables carrying vast quantities of data and power beneath the Baltic Sea to countries in northern Europe.

He emphasized that NATO’s eastern flank must not be compromised and that stationing forces in Ukraine could pose risks to Baltic nations’ security. Lithuanian Defense Minister Dovile Sakaliene ...

and we like to think that we know the Baltic Sea inside out." Located in northern Europe, the waterway is surrounded by Russia and NATO allies Denmark, Estonia, Finland, Germany, Latvia ...