From The New York Times:
Russia’s failed drone attack on a German airport was part of a dangerous pattern of escalation that, experts and officials said, risks sparking an open confrontation with NATO — whether the Kremlin wants it or not. Such attacks began occurring shortly after Russia launched its full-scale invasion of Ukraine in 2022, part of an effort by President Vladimir V. Putin to bring the war to the West. But they have recently increased in frequency and intensity, Western security officials said. The attacks, along with recent reports citing Western intelligence services suggesting Russia could be planning some kind of military incursion or provocation along NATO’s eastern flank, have frazzled Europe and left officials there casting about for solutions.