Russian jets violated NATO airspace over Lithuania for 18 seconds during suspected refueling exercise. Nation's president calls it a breach of international law amid tensions.

As China and Russia try to weaken NATO nations through cyberattacks, the alliance is responding with plans for better coordination – including for counterattack.

Lithuanian President Gitanas Nausėda said Thursday that Russian military aircraft violated Lithuania’s airspace, calling the incursion a blatant breach of the country’s sovereignty and international law.

For the first time, NATO allowed journalists to witness its annual nuclear exercise, a once-secret event that now serves as both a show of transparency and a message of deterrence toward Russia.

Authorities said the balloons are likely for smuggling, but blamed Belarus' leader, Alexander Lukashenko, for letting them float over.

BUCHAREST (Reuters) -Romania and NATO allies were notified of U.S. plans to cut the number of troops stationed on Europe's eastern flank including soldiers who were to be stationed at Romania's Mihail Kogalniceanu air base,

The Russian Il-20 did not file a flight plan for its "reconnaissance mission" in international airspace, Poland's military has said.

NATO forces shot down a suspicious drone hovering around US military barracks in Estonia, it’s emerged. The facility – Camp Reedo – is less than 30 miles from the Russian