DRONESNot Just Drones, but Massed Swarms of Them. Defenses Can’t Cope

By Timothy Millar

Published 2 August 2025

A new and sophisticated phase of aerial warfare has emerged from the conflicts in Ukraine and the Middle East over the past month, defined by the systematic use of massed drone saturation attacks. This evolving doctrine uses quantity and simultaneity to overwhelm even the most advanced air-defense systems.

A new and sophisticated phase of aerial warfare has emerged from the conflicts in Ukraine and the Middle East over the past month, defined by the systematic use of massed drone saturation attacks. This evolving doctrine, refined by Russia and Iran, uses quantity and simultaneity to overwhelm even the most advanced air-defense systems.

The core of the tactic lies not in the technological superiority of any single weapon but in the brutal economic and operational logic of drone-based attrition. By doing so, it forces reassessment of how modern militaries can protect their airspace, infrastructure and military assets.

The war in Ukraine has been the main laboratory for the development of these tactics. Early in the conflict, Russia launched small waves of Iranian-designed Shahed 136 strike drones, small propeller-driven airplanes that can carry their warheads at least 1,300 kilometers. As the conflict has progressed, Russia’s tactics have grown in scale and complexity. The trend reached a new high during nights of the past month, when Russia repeatedly launched massive assaults with 300 or even 400 propeller-driven strike drones alongside conventional jet and rocket-propelled missiles.

While Ukrainian forces remarkably neutralized hundreds of the incoming drones, at times roughly 20 percent have managed to get through. On the night of 16 and 17 June, 30 targets in Kyiv were hit. The defenses could not handle the full volume of munitions flying in.

Russia’s barrages were not an anomaly but the result of a highly effective and ongoing industrial scaling strategy. A production facility in Russia’s Alabuga special economic zone, set up with Iranian assistance, is intended to make thousands of Shahed drones a year. With more of the munitions pouring out of factory gates, Russia can mass ever larger groups of them in single strikes.

While separated by thousands of kilometers, air defense crews in Kyiv and Tel Aviv have been fighting the same technological revolution. Iran has also demonstrated the saturation doctrine. In retaliatory strikes that followed Israeli attacks that began on 13 June, Iran  launched coordinated barrages of upwards of 100 to 200 drones alongside conventional missiles. While most of the drones were intercepted, the sheer volume of the swarm stressed defenses and helped ballistic missiles get through. Altogether, 10 to 20 percent of munitions penetrated. This showed that even the most robust defenses can be breached by sheer coordinated volume.