Lyce · Hybrid Watch

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France intercepts illegal drone overflight at nuclear submarine base.

French officials are investigating an illegal drone overflight of the Atlantic coast base for France’s nuclear-armed submarines, authorities said Friday. French media reported that several drones were detected Thursday night over the Île Longue base in Brittany, western France, but military authorities wouldn’t detail their number or type. The base is the home port of France’s four nuclear ballistic missile submarines — Le Triomphant, Le Téméraire, Le Vigilant and Le Terrible. Defence Minister Catherine Vautrin confirmed that troops at the base intercepted an overflight, without detailing whether they fired shots, used electronic jamming or other means against the aerial intruders. It wasn’t clear who was responsible.

Occurrence
2025-12-05
Publication
2025-12-05T10:02:42Z
First observed
2026-09-24T06:09:10.079Z
Review status
Not assessed
Countries
FR
Updated
2026-09-27T23:56:59.668Z

E/M/R/S scores

  • EExistence0/4 · Not assessed
  • MIntent0/4 · Not assessed
  • RRussian actor link0/4 · Not assessed
  • SRussian state responsibility0/4 · Not assessed

Facts

No facts

Sources

  1. Role
    discovery_lead
    Date
    2025-12-05T10:02:42Z

    French officials are investigating an illegal drone overflight of the Atlantic coast base for France’s nuclear-armed submarines, authorities said Friday. French media reported that several drones were detected Thursday night over the Île Longue base in Brittany, western France, but military authorities wouldn’t detail their number or type. The base is the home port of France’s four nuclear ballistic missile submarines — Le Triomphant, Le Téméraire, Le Vigilant and Le Terrible. Defence Minister Catherine Vautrin confirmed that troops at the base intercepted an overflight, without detailing whether they fired shots, used electronic jamming or other means against the aerial intruders. It wasn’t clear who was responsible.