In the last months, sightings of alleged Russian drones over Denmark, Norway, Sweden, Romania, and Germany have increased. What do these sightings have in common? First, not a single one of these drones was intercepted, shot down, or forced to land through electronic interference. Second, no one knows where these drones came from and where they disappeared to. There are no radar plots, no verifiable flight paths, although in all cases it concerns critical civilian, military, or dual-use infrastructure, namely in one of the most densely guarded airspaces in the world. These drones simply disappeared, and I have no further comment on that.