Drones disrupt airports in what Danish officials call ‘hybrid attack.’ What happened and how can they be stopped?

Copenhagen airport was forced to close due to drone incursions. Steven Knap/Ritzau Scanpix Denmark/Reuters

Multiple airports in Denmark have been disrupted by drones this week in what its government says is a “hybrid attack” by unknown professional actors, as the country considers whether to invoke NATO’s Article 4 for the first time in its history.

Speculation is rife that Moscow could be behind the incursions, as Danish authorities say they are linked with recent alleged violations of NATO airspace in Poland and Romania by Russian drones.

Russia’s Embassy in Denmark has denied any Russian involvement, saying Thursday that it rejects the “absurd speculation.”

Europe is already on high alert over the series of airspace breaches by Kremlin drones and aircraft. Poland requested Artic