Russia has warned that NATO shooting down its aircraft would be a serious escalation that could lead to open war.

Baltic NATO allies are preparing for a potential Russian attack, fearful that Moscow has ambitions beyond Ukraine.

Vaindloo island, a tiny rocky outcrop in the Gulf of Finland, is serving as an unlikely barometer for rising tensions between ...

Russia has accused the U.K. of plotting a sabotage operation in a move that shows Moscow is setting the conditions for a ...

According to four NATO officials, the goal is to raise the cost of Moscow's gray-zone operations and strengthen deterrence ...

Russia could become a real threat to NATO before 2036. Its sabotage and spying activities show preparations for a possible ...

Intrusions into NATO’s airspace blamed on Russia have reached an unprecedented scale, raising questions about whether the ...

According to the open-source intelligence group Frontelligence Insight, internal documents from Russia’s main tank producer, Uralvagonzavod (UVZ), reveal plans to increase T-90 tank production by 80% ...

Russian incursions into NATO airspace are fueling divisions among allies, with some warning that repeated Article 4 signals ...

Estonia has temporarily closed a road that passes through Russian territory after reports of Russian soldiers standing there.

A Russian surveillance plane recently flew within a few hundred meters of a German frigate operating in the Baltic Sea.

A rash of Russian violations of NATO airspace last month has prompted some allies to recall Turkey's swift and deadly ...