Report

December 2025: Record 653 Shaheds in Single Attack

Breaking down the largest documented drone swarm attack in history and what it reveals about Russia's drone production capacity.

December 08, 2025
6 min read
In the early hours of December 14, 2025, Russian forces launched what Ukrainian officials have confirmed as the largest single drone attack in the history of warfare: 653 Shahed-type one-way attack drones, released in waves over approximately six hours, targeting infrastructure across multiple Ukrainian oblasts. The attack, which coincided with a barrage of cruise and ballistic missiles, marked a stark escalation in the scale of Russia's drone warfare campaign and raised urgent questions about the sustainability of Ukrainian air defenses.

The Ukrainian Air Force reported intercepting 512 of the attacking drones—an interception rate of approximately 78 percent. While this figure represents a significant defensive achievement given the unprecedented volume of incoming threats, it also means that 141 drones penetrated defenses and struck their targets. Damage reports confirmed hits on electrical infrastructure in Kharkiv, Zaporizhzhia, Dnipropetrovsk, and Kyiv oblasts, with emergency power outages affecting an estimated 1.2 million households at the peak of the attack.

The scale of the December 14 attack did not emerge from nowhere. Throughout the autumn of 2025, observers had documented a steady increase in the size of Russian drone strikes, from typical nightly attacks of 30 to 50 drones in September to regularly exceeding 100 by November. The December attack appears to represent not a one-time surge but the new baseline of Russian capability—the point at which accumulated production has enabled mass employment at scales previously unseen.

Understanding how Russia achieved this scale requires examining the supply chain that makes it possible. Western intelligence assessments indicate that Iran continues to provide the majority of Shahed drones employed in Ukraine, with monthly deliveries estimated at 300 to 400 units. Russian domestic production, initially limited to final assembly of Iranian-supplied kits, has expanded to include indigenous manufacturing of major components. At least two Russian facilities are now believed to be producing Shahed-type drones, with combined output potentially matching or exceeding Iranian supplies.

The economics of this production are grimly favorable to Russia. Even at the higher end of cost estimates—$50,000 per unit—the 653 drones launched on December 14 represent a total expenditure of approximately $32 million. The cruise and ballistic missiles accompanying the attack likely cost several times that amount. Yet the asymmetry works in Russia's favor: Ukrainian defensive expenditure for that single night, counting the missiles and ammunition expended, almost certainly exceeded the cost of the attacking weapons.

Ukrainian officials have described the December 14 attack as a deliberate attempt to overwhelm air defense capacity through sheer volume. The attack began at approximately 2200 local time, with initial waves of drones launched from multiple directions—occupied Crimea, Russia's Kursk region, and positions in the Sea of Azov. As these drones approached Ukrainian airspace, they dispersed along multiple approach vectors, forcing defenders to engage across a wide front.

The spacing of the attack was calculated to maximize defensive stress. Rather than arriving in a single mass, the drones came in waves spaced 15 to 20 minutes apart. Each wave required fresh defensive responses—radar tracking, interceptor allocation, engagement. By the third and fourth hours of the attack, Ukrainian sources reported that mobile gun systems had exhausted their ready ammunition and required resupply, while some missile batteries had depleted their available interceptors.

It was into these degraded defenses that Russian forces launched the second phase of the attack: a package of approximately 40 cruise missiles, including Kh-101 air-launched variants and sea-launched Kalibrs, accompanied by what Ukrainian officials described as "several" Iskander-M ballistic missiles. The cruise missiles followed approach routes that had been probed by the drone waves, exploiting gaps in coverage that the sustained engagement had created.

The strategic implications of the December 14 attack extend beyond the immediate damage inflicted. At the tempo now demonstrated—potentially 600 or more drones per major attack, multiple times monthly—Ukrainian air defense missile stocks face consumption rates that may not be sustainable. Western production of the AMRAAM missiles used by NASAMS, the IRIS-T interceptors, and Patriot rounds was not designed to sustain this level of expenditure. Scaling production takes time that the operational situation may not allow.

Ukrainian commanders have responded by accelerating the shift toward lower-cost interception methods. Mobile gun systems, including the German Gepard and domestically modified ZSU-23-4 variants, have assumed a greater share of the anti-drone mission. Electronic warfare systems capable of disrupting drone navigation offer another cost-effective option, though their effectiveness varies based on the specific guidance systems employed. Experimental programs exploring drone-on-drone interception and directed energy weapons have received increased priority.

The December 14 attack also revealed the extent of civilian participation in Ukrainian air defense. Social media monitoring documented thousands of citizen reports tracking drone movements across the country, with acoustic detection posts and visual observers providing real-time updates that supplemented official military tracking. This distributed early warning network—unprecedented in modern warfare—provides Ukraine with detection capabilities that would otherwise require radar assets it cannot afford to operate continuously.

For Ukrainian civilians, the record attack was one night in what has become an extended campaign of aerial harassment. The attacks arrive almost nightly now, varying in scale but never absent. The sound of the Shaheds, the air raid sirens, the anxiety of waiting to learn whether this night's targets will include one's own city—these have become facts of daily life. The December 14 attack was exceptional in its scale but unremarkable in its essential nature: another night of testing whether Ukrainian defenses can hold, whether Ukrainian society can endure, whether Western support can sustain the effort.

The answer to those questions remains uncertain. What the December attack made clear is that Russia possesses the industrial capacity and the strategic will to maintain drone warfare at scales that would have seemed fantastical before this conflict began. The war of attrition continues, measured now in hundreds of drones per night.

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