Europe is facing a new form of pressure that does not look like a conventional attack, yet increasingly resembles a systematic operation. Suspicious drones have appeared over airports, ports, military sites and coastlines, forcing NATO states to respond to a threat that is difficult to see, prove and name.
Between 2024 and 2026, at least 144 suspected drone sightings were recorded across Europe. They involved Germany, France, Belgium, the Netherlands, the United Kingdom, Denmark and other countries. The activity peaked in late 2025, when drones forced temporary airport closures in several states.
This was not only a problem of air traffic. When drones force airports to stop operations, circle near military bases or appear close to critical infrastructure, they test a state’s skies, nerves and procedures. Each such flight raises the same question: accident, reconnaissance, provocation or preparation for something larger.
According to Daycom’s earlier analysis, uncertainty is the central weapon of such operations. They are designed to remain below the threshold of open war and a collective NATO response. A drone is not a missile with an easily traceable trajectory. But when there are many such drones, and when they appear near bases and airports, the effect is already political pressure.
Suspicion increasingly falls on Russia’s shadow fleet — vessels with opaque ownership that help Moscow evade sanctions. According to one of the most plausible assessments, such ships may have been used as mobile platforms for launching drones near European shores. In that scheme, the sea becomes not a space of trade, but a gray zone for hybrid warfare.
This logic is especially dangerous for Northern and Baltic Europe. Coastlines, ports, cables, energy sites, military bases and civilian airports are tightly interwoven there. A ship can pass near critical infrastructure, switch off its signal, change course and leave behind drones, alarm and an almost unreachable chain of proof.
Denmark felt this particularly sharply. After a series of incidents near airports and military sites, Copenhagen described them as the most serious attack on the country’s critical infrastructure to date. Even without explosions, these episodes showed how costly a single low and slow object can be in civilian airspace.
The problem is that European air defense was built for a different threat. It was meant to detect aircraft, missiles and fast targets approaching from outside. A small drone flies low and slowly, sometimes resembling a bird or a light aircraft. It can be launched almost from inside a country, from a coastline, from a vessel or from a site near the border.
That is why the old division between domestic security, police, military forces, aviation authorities and intelligence no longer works. A single drone can be simultaneously an airspace issue, a military security issue, a criminal investigation, a maritime-control problem and a political decision. If responsibility is split among agencies, the response slows.
The harder question is whether to shoot it down. Over the sea, the decision is simpler. Over a city, airport or residential area, debris can kill civilians. A state is forced into a choice where every option carries danger: do not shoot it down, and allow an unknown aircraft to gather data or create chaos; shoot it down, and risk civilian casualties.
That is precisely what makes drones an ideal instrument of hybrid pressure. They are cheap compared with missiles, flexible in use, difficult to attribute and capable of forcing states to spend large resources in response. Even if the aircraft carries no explosives, it can force security forces to mobilize, flights to stop, facilities to be inspected and defenses to reveal where they work.
For Russia, such a campaign can serve several purposes. The first is reconnaissance. Drones near military sites can record routes, radars, patrols, guard reactions and response times. The second is testing NATO. Each incident reveals who makes decisions, how quickly forces are activated, where gaps exist and which procedures fail.
The third purpose is psychological. If European citizens grow used to airport closures, reports of unknown drones and alarms near bases, Russia achieves a sense of presence without an official attack. This is a war of nerves in which Moscow can deny involvement while Europe is forced to live with the consequences.
The appearances of drones near military bases in Britain, the Netherlands, Belgium, France and Germany were especially revealing. These were not merely hobby aircraft drifting over fields. Some incidents occurred near sites linked to the American military presence, the training of Ukrainian soldiers, defense companies and nuclear infrastructure.
Such episodes do not need a direct strike to carry military significance. They can force bases to change operating routines, reveal defense procedures, redeploy forces, tighten security, buy new equipment and spend political attention. This is asymmetry: a small drone creates a large bureaucratic and security wave.
European officials remain cautious about direct accusations. Attribution in such cases is difficult: even a recovered drone does not always answer who launched it, from where, for what purpose and on whose orders. Yet the repetition, geography, proximity of shadow vessels and the broader pattern of Russian disruptive activity since 2022 create a context too dense to be dismissed as coincidence.
Moscow denies conducting a sabotage campaign against Europe. But Russian strategy often does not require official acknowledgment. Its strength lies precisely in deniability: do enough to create fear and costs, but not enough to automatically trigger collective response mechanisms.
In this sense, Europe has received a strategic warning. The war of the future does not necessarily begin with a declaration or a mass missile strike. It can begin with a drone over a port, a ship with no transparent owner, a disrupted airport, an unknown aircraft over a base, a severed cable and an inability to assemble a full threat picture quickly.
This does not mean NATO is defenseless. But it does mean part of its defense culture needs rapid adaptation. For decades, the alliance prepared for large platforms — aircraft, missiles, ships, tank columns. Russia and the war in Ukraine have shown that cheap, numerous and hard-to-attribute systems can create strategic effects without a major invasion.
European states need more than purchases of counter-drone systems. They need a common picture of air and maritime threats, rapid data exchange between civilian and military structures, shared rules on the use of force, protection for airports, ports and bases, and a clear control regime for shadow fleet vessels.
The legal challenge is separate. Democratic states cannot respond as freely as an authoritarian aggressor. They need evidence, procedures, lawful grounds and proportionality. Russia exploits precisely this honesty as a vulnerability: while Europe verifies and coordinates, the hybrid operation has already achieved its effect.
The answer cannot be technical alone. Political will is needed to call repeated incidents a campaign rather than a set of accidents. Sanctions are needed against vessels, companies and intermediaries that may be involved in such operations. So are maritime surveillance, rapid detention of suspicious ships, joint investigations and readiness to raise the cost for organizers.
For Ukraine, this story has particular meaning. What Europe now experiences as a new problem, Ukraine lives through every day in a far harsher form. Drones have become tools of pressure on cities, the front, energy infrastructure, logistics and civilian psychology. The European incidents are a softer, but unmistakable, echo of the same technological war.
Russia is testing more than radars. It is testing Europe’s political reflexes. Whether the continent recognizes the threat in time. Whether it can act together. Whether it becomes stuck in arguments over proof when repetition itself has already become evidence of intent. Whether it understands that “below the threshold of war” does not mean “below the threshold of danger.”
That is why drones over Europe are a more serious signal than they may seem. They have not destroyed cities or opened a front. But they have shown that Russia’s war against the West can be waged through small aircraft, shadow ships, delayed flights and the slow exhaustion of security. This is not noise at the margins. It is a rehearsal for a new normal.
If Europe does not draw conclusions quickly, the next incidents will not merely become more frequent. They will become bolder. Russia is studying not only where a drone flew, but how the target reacted. In hybrid warfare, the weak link is not only a radar. The weak link can also be the delay in recognizing that the war has already changed form.
