Late on December 4, 2025, five drones appeared above the Île Longue naval base in Brittany, France, which is a key strategic site housing the nation's nuclear-armed submarines. The incident triggered immediate military countermeasures involving marine-operated jammers to target the aircraft. This was part of a broader pattern in early December, with multiple drones also detected near Dublin airport, close to the flight path of Ukrainian President Volodymyr Zelensky. These drone incursions are seen as part of Russia's hybrid warfare tactics targeting European critical infrastructure and airspace security. In response, European forces are advancing efforts to develop effective anti-drone defenses to protect strategic military and civilian locations from such emerging threats.

Late on December 4, 2025, five drones appeared above the Île Longue naval base in Brittany, France, which is a key strategic site housing the nation's nuclear-armed submarines. The incident triggered immediate military countermeasures involving marine-operated jammers to target the aircraft. This was part of a broader pattern in early December, with multiple drones also detected near Dublin airport, close to the flight path of Ukrainian President Volodymyr Zelensky. These drone incursions are seen as part of Russia's hybrid warfare tactics targeting European critical infrastructure and airspace security. In response, European forces are advancing efforts to develop effective anti-drone defenses to protect strategic military and civilian locations from such emerging threats.