144 drone incursions strike European nuclear sites

Spiegel and The Guardian, citing an analysis linked to the International Institute for Strategic Studies (a London-based defence think tank), reported that roughly 144 suspicious drone incidents have been recorded across more than a dozen European countries since late 2024 (Spiegel, The Guardian). The targets were not random: military bases hosting nuclear-capable aircraft in the UK, Belgium and the Netherlands, France's submarine base at Île Longue, power plants and ports. The assessed link is to Russia, possibly using commercial or shadow-fleet vessels as launch platforms.

But no European government has officially named Russia. No drone has been publicly recovered with a forensic chain of custody. Searches of one suspect vessel, the HAV Dolphin, reportedly found nothing (Spiegel, t-online). The pattern is worrying because the targets were military and energy sites. The proof remains incomplete.

Where authority fractures

The unresolved attribution matters because it slows enforcement. A small drone flying low over a military base, possibly launched from a merchant ship with opaque ownership, falls between every security system Europe has built. A state can police its own waters. Farther out, it needs a legal hook: flag-state consent, a sanctions breach, or evidence of a crime (UNCLOS). In the air, NATO's air-policing system was designed for fast jets and missiles, not cheap drones that hug the ground and vanish before interceptors scramble (NATO).

On the ground, police investigate, coast guards patrol, and military commanders protect sensitive sites. But the decision to jam or shoot down a drone over populated areas remains a national legal question with no common European threshold (New York Times).

EU tools can sharpen the picture. The bloc's Baltic maritime operations pool national coast-guard assets with satellite imagery and surveillance drones to monitor suspect vessels (Finnish Border Guard). EU sanctions can list vessels, squeeze their insurance and raise the cost of Russia's shadow fleet (Council of the EU). But neither the EU nor NATO can board a suspect ship or neutralise a drone on a national government's behalf. The tactical decision stays with the country where the incident happens. Grey-zone operations are designed to live inside exactly this kind of delay.

Denmark's useful scepticism

Not every government reads the evidence the same way. Danish media provided the sharpest counterweight to the alarm. Politiken described a case in which a Danish defence vessel was reportedly surrounded by four drones, and officials spoke of a "capable actor." The same coverage questioned whether the evidence supported calling it a Russian operation (Politiken). Weekendavisen went further: in some European cases, public evidence is weak, and in Denmark it remains difficult to establish whether drones were even present (Weekendavisen).

That scepticism is not a rebuttal; it is a warning about a different risk. If governments invoke hybrid threats without showing evidence, citizens face a choice between blind trust and dismissiveness. Both serve Moscow. As Politiken framed it, Denmark's "drone panic" may itself be what Putin wanted: uncertainty generating fear without requiring proof.

When enforcement moves the problem next door

Sweden offered a glimpse of what national action looks like. After coast-guard boardings, more sanctioned vessels reportedly avoided Swedish territorial waters (Sjöfartstidningen). Swedish commentators noted the traffic may simply shift toward Danish and German waters, where enforcement is thinner (Expressen). German reporting confirmed this: shadow-fleet tanker routes have reportedly moved closer to the German coast (n-tv).

This is a familiar European pattern. The threat crosses borders faster than authority does. One country's enforcement action tests the legal tools, but the fleet moves on. France, for its part, treats cheap long-range drones as an urgent gap in its defences: the lack of fast, affordable ways to detect and stop small drones. It is adapting layered systems to fill it (Le Monde).

The public record still lacks what would close this story: recovered drones with traceable electronics, radar tracks linking a flight to a vessel, or official government attributions naming Russia with legal confidence. The IISS-linked assessment is that a Russian link is highly likely. Governments have mostly declined to say the same on the record.

Europe already faces the vulnerability. The unresolved question is who can build the chain from suspicion to lawful action before the next incident.