World
German Drone Manufacturer Director Lives Underground
Stefan Tumann, head of Donaustahl, speaks to Stern for the first time about the alleged Russian operation against him. Since Christmas 2025, he has been constantly changing locations.
World
Hidden explosive in truck reveals Russian network targeting German drone manufacturer
The target was Stefan Thumann, head of Bavarian company Donaustahl, which produces reconnaissance and kamikaze drones for Ukraine. German investigators are treating the case as suspected preparation for an assassination.