Modern air defense is running into an arithmetic problem before it runs into a technology problem. When advanced fighters are pushed into service against disposable drones, the issue is not whether the aircraft can succeed. It is whether an alliance can afford to keep winning that way.
NATO’s recent air-policing activity along its eastern flank has shown how quickly low-cost unmanned threats can pull premium assets into routine defensive work. Alliance aircraft including F-35s, F-16s, Gripens, and Typhoons are already central to quick-reaction alert missions, while drones in Polish airspace have underlined a harder reality: the lower the target’s cost, the more punishing the exchange ratio becomes when the response depends on top-tier fighters and missile inventories.
That imbalance is not abstract. Russian decoy designs such as the Gerbera have been assessed at roughly $10,000 to produce, using plywood, foam, hobby-class engines, and simple electronics. Some are built specifically to confuse radar, trigger defensive fire, and reveal where air defenses are positioned. In other words, the drone does not need to destroy a target to be effective. It only needs to make the defender spend. That is the real trap.
For decades, Western air-defense architecture was optimized for fast jets, cruise missiles, and ballistic threats. It excels at defeating complex targets, but it was not designed around swarms of expendable aircraft assembled from commercial parts and sent forward in large numbers. Once cheap drones enter the picture, every launch decision becomes part of an industrial contest involving stockpiles, maintenance hours, sortie generation, and procurement capacity. Sending an F-35 to handle a drone may be tactically sound in the moment, especially when no lower layer is available, but it also reveals that the cheaper defensive tiers are either missing, too thin, or not yet integrated well enough to carry the load.
That is why directed-energy systems are drawing serious attention across NATO and the wider defense sector. Their appeal is less about science-fiction novelty than about restoring a sustainable cost curve. CBS reported that laser systems are being considered because they can engage drones for just a few dollars a shot, while recent U.S. reporting described the Army’s 20-kilowatt LOCUST as a rare operational example of counter-drone defense at a fraction of the cost of interceptor missiles. National Defense framed the same point more bluntly, describing directed energy as a way to “save the arsenal” by preserving expensive interceptors for the threats that truly require them.
Lasers are not a complete answer. Weather, power generation, cooling, and line-of-sight limits still matter, and microwave systems bring their own integration challenges. Yet the broader lesson is already clear: NATO needs layered defense built specifically for the drone era, not just repurposed Cold War logic with better aircraft. That means cheaper sensors for low-altitude detection, electronic warfare, guns where appropriate, interceptor drones, and reusable energy-based effectors that can absorb repeated attacks without emptying magazines.
If a decoy drone can force the launch of one of the alliance’s most sophisticated fighters, the attacker has already achieved part of its objective. The battlefield effect is immediate, but the strategic effect is cumulative: expensive readiness consumed by deliberately cheap pressure. NATO’s challenge is no longer just to intercept drones. It is to stop fighting on terms the drone designer chose.
