A drone incursion at Copenhagen airport on Monday night led to the closure of the airport for several hours, described by Danish Prime Minister Mette Frederiksen as the most severe attack on Danish infrastructure. The incident, which affected around 20,000 passengers, raised concerns about potential Russian involvement, although Kremlin spokesman Dmitry Peskov dismissed the claims. Danish intelligence indicated a high threat of sabotage, with police stating the drones were operated by a capable actor. The situation reflects escalating tensions in Europe following recent Russian drone activities.