For nearly two years, a quiet invasion has played out in the skies over Europe, and Western allies completely missed the bigger picture.
We aren't talking about massive military gear or supersonic missiles crossing borders. It's about cheap, slow-moving commercial drones buzzing over sensitive military infrastructure, nuclear submarine bases, and major commercial airports. While European governments treated these incidents as isolated local annoyances, a major report from the International Institute for Strategic Studies (IISS) in London reveals a much darker reality.
Russia successfully executed a coordinated, 19-month-long Russian drone campaign mapped Nato air defence gaps across more than a dozen Western nations. They didn't just spy. They effectively mapped out exactly where Europe's air defense systems are blind, how fast governments respond, and where legal red tape prevents commanders from pulling the trigger.
The blunt truth is that European security networks are built to stop Cold War-era threats, not $500 plastic quadcopters. This massive gap in collective security is leaving critical infrastructure wide open to exploitation.
The Secret Fleet Hiding in Plain Sight
How do you launch hundreds of drones across a dozen different countries without getting caught red-handed? You don't use military bases. You use the ocean.
The IISS study, authored by researcher Charlie Edwards, highlights a highly coordinated sea-and-air operation. Russia apparently used its sprawling commercial shipping network—specifically its notorious shadow-fleet oil tankers—to serve as floating launchpads, signal relays, and recovery stations.
These massive commercial vessels sit just outside territorial waters or blend into standard shipping lanes. While everyone watches official military borders, a tanker crew can easily deploy a small drone from a deck container, direct it toward a coastal radar site, and bring it back without raising alarm bells.
In fact, French authorities actually boarded a suspected Russian shadow tanker back in 2025 under suspicion of launching these devices. But in a move that shows just how awkward this issue is for Western allies, France kept the findings completely quiet. Because none of the sea-launched drones have crashed on land where investigators could dissect them, proving direct attribution remains incredibly tough. Kremlin spokesman Dmitry Peskov predictably brushed off the findings, asking reporters, "What does this have to do with us?"
The patterns, however, speak for themselves. Look at where these drones showed up:
- September 2025: A wave of drone incursions forced the total shutdown of Copenhagen Airport for hours.
- December 2025: Dutch fighter jets were scrambled to chase mysterious targets hovering directly over Volkel Air Base.
- Ongoing Incursions: Frequent sightings occurred near France's Île Longue nuclear submarine base, alongside major military hubs in the UK, Germany, and Belgium.
When you look at these incidents one by one, they look like rogue hobbyists or minor pranks. When you map them together over an 18-month timeline, it becomes a textbook case of reconnaissance by battle.
Four Reasons Why Russia Is Flying Drones Over Nato
This isn't random harassment. Security experts argue that the Russian drone campaign mapped Nato air defence gaps to achieve four distinct strategic goals.
1. Surveillance of Nuclear Deterrents
Moscow wants eyes on the crown jewels of Western defense. Targeting facilities like Île Longue or British airfields isn't accidental. They want to know how security forces move, what the daily routines look like, and how well-protected these high-value sites actually are.
2. Testing Allied Response Times
By sending low-altitude targets toward restricted airspace, Russian operators can sit back with a stopwatch. They note exactly how long it takes for a country to scramble jets, deploy local police, or activate electronic jamming. It gives them a precise timeline of Western military readiness.
3. Mapping Logistics and Supply Routes
A significant portion of the flights tracked by researchers occurred over areas like the Danish port of Køge, a critical node used for moving military equipment and international deployments. Mapping how gear flows into Europe helps Russia identify the exact chokepoints it could disrupt during a broader conflict.
4. Exposing Legal and Electronic Weaknesses
This is where Europe's "systemic fragility" becomes blindingly obvious. Western defense systems are engineered to track and destroy fast-moving, high-altitude threats like fighter jets or ballistic missiles. A slow, tiny drone looks identical to a flock of birds or weather clutter on standard military radar screens.
Even worse is the bureaucratic red tape. In many recorded cases, military commanders spotted the drones but couldn't do anything about them. If a drone is hovering directly over a civilian area or near a commercial flight path, firing a projectile risks causing massive collateral damage. Many European nations simply lack the legal frameworks or updated rules of engagement required to quickly disable a low-threat aircraft in civilian airspace. Russia knows this, and they intentionally exploit the gray zone between peacetime laws and wartime defense.
The Fragmented Western Response
The biggest win for Moscow during this 19-month campaign wasn't technical; it was psychological. Western allies completely failed to mount a collective response.
Instead of treating the flights as a unified, hostile intelligence operation, individual governments isolated the incidents. Berlin dealt with German base sightings. Copenhagen dealt with airport chaos. Because nations were hesitant to pointing fingers directly at Moscow without ironclad physical proof, the collective alliance remained paralyzed.
Ulrike Franke, a senior policy fellow at the European Council on Foreign Relations, pointed out how absurd it is to treat these as hobbyist issues. Yet, for nearly two years, that's exactly what happened. The continent’s reliance on privately operated infrastructure, legacy technology, and outdated maritime legislation made it incredibly easy for Russian front entities and maritime proxies to slip through the cracks.
While European governments have recently kicked off new counter-drone initiatives and expanded EU defense funding, playing catch-up during an active intelligence campaign is a dangerous position to be in. Resilience alone isn't going to cut it anymore.
What Europe Needs to Do Right Now
Fixing this vulnerability requires moving past standard diplomatic statements and addressing the structural gaps that allowed this campaign to succeed.
First, Nato and national governments must immediately rewrite their peacetime rules of engagement. Commanders need clear, legal authority to disable unauthorized drones over sensitive sites instantly, using directed energy or cyber takeovers rather than kinetic weapons that risk civilian casualties.
Second, maritime policing needs a massive upgrade. If shadow-fleet tankers are operating as mobile launchpads, coastal states must utilize targeted ship inspections and strict maritime surveillance to disrupt these operations before a drone ever leaves the deck.
Finally, intelligence sharing on gray-zone tactics must be centralized. Treating a drone over a Danish port and a drone over a French nuclear base as separate domestic issues plays right into Moscow's strategy of division. If the West doesn't start looking at the sky through a single, unified lens, its air defense gaps will remain wide open for anyone to exploit.
