Overview

• Overnight flights of unidentified drones were reported above Aalborg, Esbjerg, Sonderborg and the Skrydstrup air base, with Aalborg airport closed for several hours before reopening.
• Police said they could not safely shoot down the aircraft, no operators were detained, and an investigation is underway with domestic intelligence PET and the armed forces.
• The incursions disrupted four flights, including two SAS services plus one each from Norwegian and KLM, with an Amsterdam–Aalborg flight diverted to Billund, according to airport officials and Flightradar.
• Senior officials described a systematic threat likely involving a professional actor; Prime Minister Mette Frederiksen has not ruled out Russian involvement and the Kremlin has denied responsibility.
• Copenhagen is considering an Article 4 consultation at NATO and legal changes to boost neutralization capabilities and allow infrastructure owners more options, as Norway separately seized a drone near Oslo and other NATO states reported recent airspace incidents.