They are testing the boundary, measuring the reaction, then pushing again.
Since the summer of 2024, unmanned aircraft have appeared with quiet persistence over some of Europe's most sensitive military and nuclear installations — not as accidents, but as a deliberate campaign. A new assessment from the International Institute of Strategic Studies traces 144 suspected drone incursions across six NATO nations to Russia's shadow fleet, aging vessels that slip beneath the surface of international sanctions. The pattern reveals a strategy older than any weapon: probe the boundary, measure the hesitation, and slowly teach an adversary to accept what it once would not tolerate.
- Russia has conducted 144 suspected drone incursions over NATO military bases and nuclear storage sites across Germany, France, Belgium, the Netherlands, the UK, and Denmark — launched from sanction-evading shadow fleet vessels operating just offshore.
- The drones frequently evade radar detection, grounding commercial flights, penetrating defense perimeters, and generating sustained psychological pressure on European populations without crossing the threshold that would compel a direct military response.
- Analysts describe the operation as layered — part espionage, part stress test, part psychological warfare — designed to measure how fast NATO responds, where its air defenses fail, and whether European publics will pressure their governments to pull back from supporting Ukraine.
- Russia maintains official denial, but the IISS has correlated shadow fleet vessel positions with drone incident timelines, and Sweden has directly accused Moscow after a drone launched from a Russian spy ship flew near a French aircraft carrier.
- NATO allies are now elevating drone warfare and Russian airspace probing to the top of their agenda at upcoming meetings in Turkey, as the alliance confronts a campaign engineered to normalize low-level violation as the new baseline of European security.
Between the summer of 2024 and early 2026, unmanned aircraft began appearing repeatedly over military bases, nuclear sites, and civilian airports across six NATO countries — Germany, France, Belgium, the Netherlands, the UK, and Denmark — as well as American air bases in Britain. A new report from the International Institute of Strategic Studies has linked these 144 suspected incursions to Russia's shadow fleet, a collection of aging vessels operating outside international sanctions. The pattern is not random. It is a coordinated campaign to test how quickly NATO allies respond to airspace violations and how their defenses perform under sustained pressure.
The evidence is specific. On January 3, 2025, the shadow fleet vessel Arctica sailed along the Danish coast while twenty drones flew over the port of Koege before disappearing into the sea. When drone sightings forced the closure of Copenhagen Airport that September, the IISS identified multiple shadow ships nearby. The drones carry a tactical advantage: they often fail to register on radar, and when they do appear, they create ambiguity that Russia can exploit through denial.
The targets are not incidental. Germany recorded more than a thousand suspicious drone sightings in 2025 alone, concentrated over defense companies and bases where Ukrainian soldiers were training. Mystery drones appeared over facilities in the Netherlands and Belgium believed to store American B61-12 nuclear gravity bombs. France's ballistic-missile submarine base at Île Longue came under scrutiny. Each incursion serves multiple purposes: gathering intelligence on response protocols, identifying gaps in air defenses, and measuring how much sustained violation European populations will absorb before demanding their governments stand down.
Retired Lieutenant General Ben Hodges, former commander of US Army Europe, described the campaign as layered — espionage combined with psychological pressure designed to frighten populations into opposing their governments' support for Ukraine. Elisabeth Braw of the Atlantic Council added that the operators are rehearsing a crisis in real time, watching how European societies fracture under prolonged uncertainty. The economic costs have been tangible: repeated airport closures, disrupted military operations, and the penetration of some of the continent's most sensitive defense perimeters.
Russia denies everything. But the IISS has tracked shadow fleet positions and correlated them with drone incidents, and Sweden has gone further than any other European nation, directly accusing Moscow after a drone from a Russian spy ship flew near a French aircraft carrier. The rest of Europe remains in a state of documented uncertainty — each sighting adding to a pattern that cannot quite be proven but cannot be ignored. NATO allies are now placing drone warfare and Russian testing of alliance defenses at the top of their agenda for upcoming meetings in Turkey.
Between the summer of 2024 and early 2026, something unusual began happening in the skies over Europe. Unmanned aircraft appeared repeatedly over military bases, nuclear sites, and civilian airports across six NATO countries—Germany, France, Belgium, the Netherlands, the UK, and Denmark—as well as above American air bases in Britain. A new report from the International Institute of Strategic Studies has connected these 144 suspected drone incursions to Russia's shadow fleet, a collection of aging vessels that operate outside international sanctions regimes. The pattern suggests something more deliberate than random surveillance: a coordinated campaign designed to test how quickly NATO allies respond to airspace violations and how their air defenses perform under pressure.
The evidence points to Russian ships as the launch platforms. On January 3, 2025, the shadow fleet vessel Arctica sailed along the Danish coast while twenty drones flew over the port of Koege before vanishing into the sea. In September, when drone sightings forced the closure of Copenhagen Airport, the IISS identified multiple shadow ships in the vicinity, including the Arctica and the Boracay. The drones themselves present a tactical advantage: they often fail to register on radar, and when they do appear, they create ambiguity. Russia can deny involvement. The ships provide distance. The operation remains deniable.
The scope of the campaign extends across the continent's most sensitive installations. Germany recorded more than a thousand suspicious drone sightings in 2025 alone, concentrated over defense companies and military bases where Ukrainian soldiers were training. In 2025, mystery drones targeted military facilities in the Netherlands and Belgium where the United States is believed to store B61-12 nuclear gravity bombs. France's ballistic-missile submarine base at Île Longue also came under scrutiny. These are not random targets. They are the infrastructure of NATO's deterrence and its support for Ukraine. Each incursion serves multiple purposes: gathering intelligence on response protocols, identifying gaps in air defense systems, and measuring the psychological tolerance of European populations for sustained airspace violations.
Retired Lieutenant General Ben Hodges, who commanded US Army Europe until 2018, described the operation as layered. "There's no doubt in my mind that the Russians are using the shadow fleet vessels as a platform to get different types of drones in closer to various European countries," he said. But the campaign extends beyond espionage. Hodges noted the psychological dimension: "It's a combination of espionage. But also psychologically to create a lot of anxiety in populations to scare them so that they would put pressure on their governments not to support Ukraine." Elisabeth Braw of the Atlantic Council framed it differently. The operators, she suggested, are testing how authorities respond, whether the public will panic, whether citizens will blame their leaders. They are rehearsing a crisis scenario in real time, observing how European societies fracture under sustained uncertainty.
The economic costs have been tangible. Repeated drone sightings forced temporary closures of major commercial aviation hubs, including airports in Germany, Spain, and Denmark. Military operations were disrupted. The perimeters of some of Europe's most sensitive defense installations were penetrated. The campaign appears designed to normalize low-level violations—incidents serious enough to disrupt daily life but not severe enough to trigger a direct military response from NATO. It is a calibrated strategy: push the boundary, measure the reaction, retreat slightly, then push again. The goal is to establish a new baseline of acceptable incursion, to wear down the threshold at which the alliance considers a violation serious enough to warrant escalation.
Russia's official position is denial. President Vladimir Putin has rejected accusations of sabotage and surveillance, asking reporters to name even one proven fact. But the IISS has done precisely that, tracking the locations of shadow fleet vessels and correlating them with drone incidents. The connection is circumstantial but consistent. Sweden is the only European country to accuse Moscow directly, after a drone launched from a Russian spy ship flew near a French aircraft carrier. The rest of Europe remains in a state of documented uncertainty, each drone sighting adding to a pattern that authorities cannot quite prove but cannot ignore.
The campaign is not limited to Europe. In December 2023, unauthorized aircraft appeared above Virginia's Joint Base Langley-Eustis for seventeen consecutive days, evading military tracking systems and forcing the Pentagon to deploy specialized assets, including a NASA high-altitude jet, to investigate. In March, drones flew near Barksdale Air Force Base in Louisiana, home of the B-52H Stratofortress bomber, in patterns suggesting operators were testing security responses. The Trump administration eventually declassified these investigations and concluded that most reported sightings involved hobbyists rather than foreign threats. But the IISS assessment of the European campaign is unambiguous: these are no hobbyists. The most likely culprit is operating from shadow vessels at sea, and NATO allies are now placing drone warfare and Russian testing of alliance defenses at the top of their agenda for upcoming meetings in Turkey.
Citações Notáveis
Russia is using shadow fleet vessels as a platform to get different types of drones in closer to various European countries, combining espionage with psychological pressure designed to create anxiety in populations and discourage support for Ukraine.— Ret. Lt. Gen. Ben Hodges, former commanding general of US Army Europe
The operators are testing how authorities respond, whether the public will panic, whether citizens will blame their leaders—rehearsing a crisis scenario in real time.— Elisabeth Braw, Atlantic Council
A Conversa do Hearth Outra perspectiva sobre a história
Why would Russia bother with drones when they could just use satellites to gather the same intelligence?
Satellites are visible, trackable, and their presence is understood as espionage. Drones create ambiguity. They force a response without committing Russia to anything. It's the uncertainty that does the work.
But if NATO knows it's Russia, why not just shoot the drones down?
Because shooting down a drone is an act of war. It's the threshold question. Russia is testing exactly where that line sits—how many incursions before NATO decides to cross it.
The psychological angle seems almost more important than the military one.
It is. If you can make a population afraid of their own skies, if you can make them doubt their government's ability to protect them, you've already won something. You don't need to fire a shot.
Why use the shadow fleet specifically? Why not just launch from Russian territory?
Distance and deniability. A ship at sea is harder to attribute. It creates space for Russia to deny involvement. And the ships are already evading sanctions anyway—they're already operating in a gray zone.
What happens if NATO decides to respond militarily?
That's the calculation Russia is making. They're testing the threshold precisely because they want to know what it is before they cross it for real.