Russia appears to have been deterred by NATO's firm response last month to incursions into Polish and Estonian airspace, but Moscow is expected to continue testing boundaries, the U.S. general serving as NATO's top commander said on Tuesday.

The latest incursion comes after Russian drones invaded the airspaces of Denmark, Estonia, Norway and Poland last month.

In a post on X, Lithuania's President Gitanas Nausėda slammed what he called a "blatant breach of international law and territorial integrity."View on euronews

Following Russia's violations of NATO airspace and renewed strikes in Ukraine, NATO members weigh air defense options ahead of the defense ministers meeting.

United States Secretary of Defense Pete Hegseth said “firepower” is coming to Ukraine through European nations’ purchases of US weapons, but whether that includes American-made Tomahawk missiles is still not clear.

Two Russian military aircraft entered NATO member Lithuania's airspace on Thursday for about 18 seconds, Lithuania's military said.

Nato has once again been forced to scramble fighter jets after the "cruel" Vladimir Putin breached Lithuania's airspace. Lithuanian President Gitana Nauseda confirmed on Thursday night that his nation's airspace was violated by Russian warplanes.

Trump has pushed NATO members to spend at least 5 percent of their GDP on national defense. At a NATO summit in The Hague in June, most members agreed to a spending target of 5 percent of GDP — 3.5 percent on core military expenditure and 1.5 percent in defense-related areas such as military mobility by 2035.