Oct. 3, 2025, 5:43 AM EDTBy Freddie ClaytonLONDON — Something is shifting in the skies of Denmark.Europe’s leaders met in Copenhagen this week with security fears pressing in from every direction and a new determination to face down what they say is a mounting threat from the Kremlin.Fortified by intense security measures after a wave of drone incursions above airports and sensitive sites, two high-stakes summits in the Danish capital offered a mounting sense of collective clarity — and a possible solution that sounds like science fiction: a “drone wall.” “There is only one country that are willing to threaten us, and it is Russia,” Danish President Mette Frederiksen told reporters on Wednesday, adding that Europe was in the middle of a “hybrid war.”“I think we are in the most difficult and dangerous situation since the end of the Second World War,” she added. “I want us to rearm. I want us to buy more capabilities. I want us to innovate more.”The advent of advanced, low-cost drones has transformed the landscape of war and security, helping Ukraine to match its far larger adversary but also leaving Western powers scrambling to adjust. NATO launched an initial effort to bolster its flank last month after Poland shot down Russian drones that had violated its airspace. Renewed reports of drone sightings from Germany to Sweden have fueled pressure to do more.