The longstanding Western method of air defense, which depends on sophisticated aircraft, costly interceptors, and the capacity to neutralize nearly all incoming objects, faces mounting pressure from inexpensive drones and large-scale aerial assaults, a leading NATO official cautioned.

Fresh aerial dangers that test conventional tactics are appearing quickly, and the era of assuming one can remain passive while countering every incoming risk through standard tools such as supersonic planes and ground-based missiles has ended, Sir John Stringer, NATO's Deputy Supreme Allied Commander Europe, explained to Business Insider.

Conflicts in Ukraine and the Middle East illustrate that upcoming battles may diverge sharply from those Western forces have become accustomed to waging.

Western powers have historically maintained complete or near-complete aerial dominance over less capable opponents, yet future clashes could involve NATO facing strong militaries such as those of Russia or China, while even minor players now deploy swarms of low-cost drones capable of saturating protective systems.

Instead, forces will need to address incoming threats through alternative methods, such as deploying their own unmanned systems to counter drone waves or employing electronic warfare techniques, Stringer noted.

Advanced missiles and aircraft remain essential for Western militaries, Stringer added, and they continue to hold value. At the same time, the alliance requires abundant affordable countermeasures because the volume of airborne dangers has risen dramatically.

The spectrum of risks now ranges from low-cost unmanned aerial vehicles and drones on one side to ballistic missiles launched from aircraft and hypersonic weapons on the other, he observed.

This wide array of challenges compels NATO to reconsider both the equipment used for sky protection and the quantities required. Stringer described this shift as among the most significant adjustments confronting Western armed services, which must now field defenses in greater volume.

Western militaries must accelerate development in certain domains, Stringer stated, and their countermeasures must align with the appropriate segment of the cost spectrum, avoiding the repeated use of multimillion-dollar interceptors against far less expensive targets.

He identified the clearest instance of imbalance as employing American Patriot missiles against Shahed-type drones currently operated by Iran and Russia, calling such an approach unsustainable.

One-way attack drones of the Shahed variety are estimated to cost between twenty thousand and fifty thousand dollars apiece, while Patriot Advanced Capability-3 interceptors carry price tags near 3.7 million dollars each, with inventories already under strain and slow to replenish.

This disparity has triggered concern across NATO, where leaders emphasize that while sophisticated systems stay necessary, they cannot serve as the sole line of protection.

Ukraine has pioneered approaches such as low-cost interceptor drones to handle incoming unmanned threats without expending high-value missiles, and allied nations are adopting similar tactics. Stringer added that the West requires more affordable detection sensors of the type Ukraine employs, in addition to its established high-end platforms.

Yet Stringer stressed that protection by itself falls short.

He maintained that Western forces must preserve a core principle of air power established nearly a century ago, namely that effective defense requires strong offensive capabilities. The alliance must target manufacturing sites and the origins of incoming weapons rather than merely reacting.

Discussions often focus on striking the archer instead of the arrow, Stringer said, but the goal should extend to facilities producing those arrows. Reliance on simply absorbing every attack is insufficient.

NATO countries must expand their production capacities across both dedicated defense firms and wider industry, he said, pointing to Ukraine's rapid innovation in weaponry as proof of the benefits when more enterprises convert to wartime output.

Examining emerging drone manufacturers in the West reveals that many did not exist five years earlier and few originated from conventional defense sectors, Stringer observed.

Even substantial spending on protective measures may leave the West unable to shield every asset during a major future conflict, officials and analysts caution. Nations could face hard decisions on priorities as adversaries strike military installations, urban centers, and vital infrastructure.

Stringer further noted that airborne threats now mean Western homelands can no longer remain insulated while troops operate abroad. Missiles and drones can reach areas once considered secure rear zones.

The situation prompts Western militaries to revise their understanding of air dominance. Complete and persistent control may prove unattainable. Former US Air Force Chief of Staff Gen. David Allvin observed that Ukraine's experience indicates the United States might achieve air supremacy only in limited intervals rather than continuously.

Stringer affirmed that attaining control of the air remains vital, though the methods will evolve.

Air superiority must still be secured, he said, because it underpins all joint operations. Without the ability to guarantee access and freedom of movement for forces, the mission fails.

Even the structure of air command and coordination may require adjustment given rising threats, Stringer said. Western forces have traditionally relied on centralized hubs to manage patrols, direct aircraft, and allocate defenses.

Those centers will need to become more dispersed to reduce vulnerability, Stringer said, even if the change complicates air operations.