18 December 2025

Drones targeting European nuclear weapons infrastructure

Dr Daniel Salisbury

The drones were allegedly intercepted using a jamming system. French sources have been cautious in assigning culpability. Commander Guillaume Le Rasle, spokesperson for the maritime prefecture, also claimed that ‘sensitive infrastructure was not threatened’ by the suspicious flights.
High value nuclear targets
The submarine base at Île Longue is heavily protected because it handles nuclear warheads, missiles, and submarine nuclear-reactor fuel. France’s SSBN fleet carries around 240 of the country’s estimated 290 nuclear warheads, constituting most of its strategic deterrent. Recently, French forces have been at the centre of a debate over European nuclear deterrence amid concerns over Russian aggression and a withdrawal of support from the United States.

Events at Île Longue are the latest in a series of similarly mysterious flights over NATO nuclear bases as well as a range of other military and civilian targets.

Drones were observed over Kleine-Brogel Air Base in Belgium on three consecutive nights in early November 2025, prompting a helicopter deployment in response. Guards shot at ten suspicious drones seen over Volkel Air Base in the Netherlands in late November, although no wreckage was recovered. In December, two Dutch F-35s from Volkel scrambled to intercept an unidentified aircraft, reportedly a drone. Kleine-Brogel and Volkel are two of six bases located in five European countries (Belgium, Germany, Italy, the Netherlands and Turkiye) that together host 100 US non-strategic nuclear B61-12 gravity bombs.

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