Three Russian fighter jets violated Estonian airspace Friday in a move the Baltic nation called "unprecedentedly brazen" and that appears to be the latest test of NATO's defenses by the Kremlin's forces. NATO aircraft intercepted the jets, the military alliance's spokesperson Allison Hart said on X.

Russia denies jets entered Estonian airspace in the same month as its drones violated the airspace of two other Nato members.

Russian jets carrying Kinzhal ballistic missiles breached Estonian airspace, prompting NATO interception and potential Article 4 consultation requests, according to sources.

Estonia summoned a Russian diplomat to protest after three Russian fighter aircraft entered its airspace without permission Friday and stayed there for 12 minutes, the Foreign Ministry said, just over a week after NATO planes downed Russian drones over Poland and heightened fears that the war in Ukraine could spill over.