On the night of 22 September, Copenhagen and Oslo’s main airports were temporarily closed after separate drone sightings, causing major flight disruptions. Take-offs and landings at the airports were suspended for approximately four hours. Danish Prime Minister Mette Frederiksen called it a “serious attack on critical infrastructure,” and authorities suggested the incident involved a “capable operator.” Asked whether the drones were of Russian origin, officials declined to confirm or deny. The shutdowns come amid heightened security concerns in Europe, following recent Russian airspace violations, underscoring the growing vulnerability of critical infrastructure to drone threats.