WARSAW: Polish and allied aircraft were deployed in a “preventive” operation in Poland's airspace Saturday (Sep 13) because of a threat of drone strikes in neighbouring areas of Ukraine, and the airport in the eastern Polish city of Lublin was closed, authorities said. The alert came after multiple Russian drones crossed into Poland on Wednesday, prompting NATO to send fighter jets to shoot them down and underlining long-held concerns about the expansion of Russia’s more than three-year war in