How cheap drones are rewriting the economics of war

In May 2026, a Ukrainian interceptor drone costing roughly $2, 000 chased down a Russian Shahed over Kyiv. The Shahed cost about $35, 000 to build. The missile that would otherwise have done the job costs over $1 million. That single engagement contains the entire story of how warfare’s economics have been upended, and why the world’s most powerful militaries are scrambling to adapt. For decades, the economics of defence moved in one direction: upwards. Fighter aircraft became more capable and vastly more expensive. Missiles became more precise and more costly. Warships grew so sophisticated that navies could afford fewer of them. Technological superiority meant exquisite machines, produced in small numbers and maintained at enormous expense. Then came the sub-$5, 000 drone, cheaper than a used car, built with off-the-shelf lawnmower or moped engines, discarded the moment it detonates. These flying munitions have turned precision strike into fast fashion. Ukraine and the Middle East have exposed the same crack in the old model. It is now possible to build a simple autonomous weapon for a few thousand dollars and throw dozens, or even hundreds, at a target in one night. The country on the receiving end often has to answer with interceptors costing hundreds of thousands of dollars apiece, sometimes millions. You can win every individual intercept and still lose the war of arithmetic. And that is before accounting for the ones that get through, because not every drone is stopped, and the damage that lands matters just as much as the bill for stopping the rest. Ukraine – a victim and practitioner Russia sent roughly 54, 000 long-range strike drones at Ukraine in 2025 alone, with some nights bringing more than 500. Ukraine’s answer has been a counter-drone system of cheap interceptors, usually $1, 000 to $3, 000, built specifically to chase down Shahed-type drones. By May 2026, that system was catching 91. 7% of what Russia threw at it nationally, up from around 70% over Kyiv in February. But Ukraine has not just been playing defence. Its own long-range drone campaign has hit eight of Russia’s ten biggest oil refineries, some more than once, including one nearly 1, 000 miles from the border. The International Energy Agency (IEA) says the campaign has suppressed Russian refining output for months and contributed to fuel shortages as far away as Siberia. This is the same cheap-drone economics working in the other direction: Ukraine is doing serious damage to the infrastructure that funds Russia’s war for a fraction of what that infrastructure is worth. Iran – industrial-scale arithmetic The Middle East gave us a bigger, faster version of the same problem. In the first days of the 2026 US-Iran conflict, Iran launched roughly 700 drones and missiles a day at American, Israeli, and Gulf targets. CENTCOM says combined US and partner air defences knocked down more than 6, 000 one-way attack drones and over 1, 500 ballistic missiles during Operation Epic Fury, at a total cost CSIS puts between $34 billion and $42 billion. Iran’s Shahed-family drones cost around $30, 000 to $35, 000 each. The exchange ratio is staggering: a $35, 000 drone forcing a response costing hundreds of times more. That defence was not perfect, and what got through was serious. Twenty-two US service members were killed. Al Udeid Air Base in Qatar, the largest US base in the region, took a direct hit from an Iranian ballistic missile. At Kuwait’s Ali Al Salem base, a strike destroyed an Italian MQ-9 Reaper and damaged two Eurofighter Typhoons. Drones hit a Kuwaiti oil refinery and the country’s international airport. A strike on the UAE killed a civilian and damaged facilities near Al Dhafra Air Base. Bahrain, home to the US Navy’s regional headquarters, was hit repeatedly. None of that flips the underlying math, Iran still spent far less than the US and its allies did defending against it. But the cheap side of this equation was not just absorbing cost. It was destroying expensive equipment and facilities. That is exactly why countries keep investing in it despite how expensive it is to stop. Once the US and Israel knocked out most of Iran’s air defences, the mix shifted: fewer $2. 6 million Tomahawks, more $100, 000 JDAM-guided bombs, and the daily cost of the war dropped sharply. The lesson holds: you cannot defend against this stuff with one expensive system. You need cheap tools for cheap threats and expensive ones held in reserve for what actually needs them, and you have to accept that some of it will get through no matter what you build. Russia’s continuously updated weapon Russia has turned the Iranian Shahed design into something closer to a continuously updated piece of software. Early versions combined GPS with inertial navigation. As Ukraine got better at jamming, Russia added jam-resistant antennas, then cameras, then Raspberry Pi computers and 4G modems running on local SIM cards for backup communication. Some newer versions can relay signals to each other across more than 120 kilometres, and a few now pair with fibre-optic drones that are almost impossible to jam at all. None of these individual pieces are cutting-edge. Stacked together, they make a genuinely resilient weapon, proof that you do not need one brilliant AI system to build something hard to stop, just several cheap ones layered on top of each other. The US is catching on During the Iran war, the US Army rushed through an order for 13, 000 Merops interceptor drones at around $15, 000 each, hoping volume eventually pushes that under $10, 000, against Shahed-type targets worth $30, 000 to $50, 000. The Pentagon’s Drone Dominance Program initially called for 30, 000 drones at an average price of about $5, 000 each, with later phases envisaging up to 150, 000 units at roughly $2, 300 per drone. The programme is broader than long-range strike: Gauntlet II includes close-quarters missions focused on drones capable of operating in buildings, trenches, bunkers, and other confined environments. The broader US approach is now layered by cost as much as by altitude: Patriot and THAAD at the top, cheaper missiles and aircraft in the middle, guns and autonomous interceptors at the bottom. But the constraint is real. Patriot production before the war ran at only 60 to 65 missiles a month, and even the most powerful military in the world burned through interceptors faster than factories could replace them. You cannot out-manufacture an enemy building thousands of disposable drones a month with a production line turning out a few dozen exquisite missiles. Travis Metz, deputy director and chief operating officer of the Defense Innovation Unit, who has run the Pentagon’s Drone Dominance Program since last fall, said Ukraine will produce between six and seven million small first-person-view attack drones this year, roughly 500, 000 a month. What this actually changes None of this makes the $100 million fighter jet pointless. But it is now clear that modern militaries need both ends of the spectrum: exquisite capability and disposable mass. And mass cuts both ways, offence and defence alike. Give a cheap airframe better navigation, cellular links, mesh networking and a bit of AI, and its capability climbs a lot faster than its price does. That breaks the old assumption that smarter always meant pricier. The next arms race will not come down to who builds the single best missile or jet. It will come down to who can combine cheap hardware, smart software, resilient navigation and manufacturing scale the fastest, while accepting that however good your defence is, some of what the other side throws at you is still going to land. The article does not necessarily reflect the opinion of Business Recorder or its owners.

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