Poland deployed air force jets for the second time in a week, alerted residents and closed Lublin airport near the Ukrainian border because of drones flying in its neighbor's airspace, its Operational Command said in a post on X.
Authorities say Polish and allied aircraft have been deployed in a "preventive" operation in Poland's airspace because of a threat of drone strikes in neighboring areas of Ukraine.
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.