Denmark was forced to halt flights from Aalborg airport after drone activity was spotted in the country's airspace for the second time this week.

The vessel had its tracking equipment deactivated, indicating the vessel wished to avoid detection by Danish authorities.

DENMARK may initiate Nato’s Article 4 after mysterious drone incursions menaced four airports across the country in one night. It comes just days after Copenhagen Airport – the busiest

In an era of hybrid warfare, there is a sense of embarrassment that Denmark's critical infrastructure has become vulnerable.

The Danish defense minister said the attack appeared to be coordinated and drones flew at critical infrastructure.

Danish Justice Minister Peter Hummelgaard said at a Thursday press conference that drones were also reported over the southern cities of Esbjerg and Sonderborg, as well as over the Fighter Wing Skrydstrup air base, which is home to Danish F-16 fighter jets.

Intrusions into NATO’s airspace blamed on Russia have reached an unprecedented scale, raising questions about whether the Kremlin is trying to test the alliance’s willingness to respond to a direct attack or divert its attention and resources from the war in Ukraine.

Denmark's defense chief has called a series of unidentified drones being spotted near airports and military installations a "hybrid attack."

NATO Secretary General Mark Rutte has assured Danish Prime Minister Mette Frederiksen of the alliance's solidarity following drone incidents at Danish airports. The situation is being taken "very seriously,