Estonia has requested Article 4 consultations after three Russian MiG-31 fighter jets entered their airspace on Friday morning.

Three Russian MiG-31 fighter jets flew into Estonia on Friday, escalating tensions and marking the latest violation of NATO airspace by Moscow.

Estonia summoned a Russian diplomat to protest after three Russian fighter aircraft entered its airspace without permission Friday and stayed there for 12 minutes, an occurrence that the European Union said "further escalates tensions in the region.

The Polish military statement gave few details, but the incident follows the U.S. Army Special Operations Command announcing that four of its soldiers were killed in a crash involving a U.S. Army MH-60 Black Hawk helicopter in Washington state on Wednesday.

A new memorandum will see Ukrainian forces training Polish troops in counter-drone tactics. It's a moment of recognition of Kyiv's growing expertise.

NATO’s central purpose is to defend its member states from attack, real or perceived, and that’s what NATO did.

NATO has scrambled its first jet to defend its airspace under Eastern Sentry, the mission to secure airspace on its eastern flank that was launched in response to Russia's violations of Polish airspace.

Polish President Karol Nawrocki on Sunday signed a classified decree permitting a permanent NATO troop in Poland as part of Eastern Sentry.

The U.S.-led military alliance said it would bolster defenses along its eastern flank after the incursion, the first of its kind since the Ukraine war began; Russia denied targeting Poland.

Increased NATO defense spending alone cannot ensure the alliance’s security if it does not solve its recruitment problem.