Rewriting the Missile Math: Low-Cost Defence in the Gulf

Spotlight

• The Gulf needs a balanced interception architecture:lasers and interceptor drones for cheaper threats, with Patriot and THAAD reserved for advanced missiles.
• Production speed is as important as interception cost—Shaheds can be replenished within months, while Patriots may take years.
• Local manufacturing of low-cost weapons and collective Gulf defence are essential for sustained protection during prolonged conflict.

On 14 September 2019, a swarm of cheap drones and cruise missiles, reportedly worth US$15,000 apiece, slipped beneath Saudi Arabia’s layered air defences to strike the  Aramco company’s oil-processing complexes at Abqaiq and Khurais. This surprise attack cut daily output by 5.7 million barrels, causing one of the largest single-supply losses in the modern history of oil.

Saudi Arabia was the world’s fifth-largest defence spender in 2019, with a multi-layered network of Patriot, THAAD, Shahine, and other systems procured from multiple nations. However, this network could neither detect nor stop the attack because it had been built for different kinds of threats: high-altitude ballistic missiles. This strike by Yemen’s Houthis, allegedly using missiles of Iranian origin, was a warning. The 2026 Iran conflict was the lesson.

When the United States (US) and Israel began their military campaign against Iran in February 2026, Iran answered with hundreds of ballistic missiles and drones, striking every member of the Gulf Cooperation Council (GCC) in a single campaign. This exploited the same gaps in Gulf defences that the Houthis’ attack had exposed in 2019: a) cost asymmetries—an expensive defence against a cheap offence b) low and slow drones that slipped below the radar.

A third dimension that emerged in 2026 is time, with production lead time for Patriot interceptors being far greater than for Shahed drones. Expensive weaponry did not buy sustainable protection as it is vulnerable to stockpile depletion and less effective against swarming tactics. Intercepting Iran’s offensive reportedly cost the United Arab Emirates (UAE) about US$1 billion a day. The question now is whether the Gulf can defend itself without going bankrupt by finding a low-cost and balanced means of defence.

The Cost and Production Asymmetries

A Shahed drone costs between US$20,000 and US$50,000 today, but the Patriot interceptor fired to kill it is worth around US$4 million, while a THAAD interceptor costs US$12–15 million. The AN/TPY-2 radar that cues THAAD runs can cost more than US$1 billion, but this was reportedly disabled by drones costing some $30,000 each: a cost–exchange ratio above 30,000:1.

Worse, as observed in the Russia–Ukraine war as well, Shaheds flying in mixed salvos clutter radar and bait operators into expending scarce interceptors, opening corridors for the ballistic missiles behind them. Each interceptor used must be replaced via supply chains, a challenging task as every Patriot missile can take more than two years to build, while Iranian facilities can build more than 200 Shahed drones a month and are quick to replenish them. Iran also salvaged around half of its missile launcher inventory  after the US attacks, and could regain full drone-strike capability within six months. Therefore, low-cost and time-effective defence is now a precondition for survival. It can be best understood as a strategy operating on two levels: cheaper and proportional interception along with cost-and time-effective production.

Cheaper and Proportional Interception

An expensive and sophisticated device like the Patriot interceptor should not be expended on cheap and rudimentary technology like the Shahed drones. Interceptor drones, which the Gulf is focusing on, are better alternatives. A 10-year ‘Drone Deal’ Ukraine signed with Saudi Arabia, the UAE, and Qatar in April 2026 transfers a technology purpose-built for Shaheds. Ukrainian operators now claim to be able to strike 97 percent of incoming Shaheds with drone interceptors costing only US$800–US$3,000. This drone-versus-drone match is not only cheaper, but more attuned for slow, low-profile drones. That is why the counter-Unmanned Aircraft System (UAS) has become the fastest-growing defence procurement category in the GCC.

The second type of instrument is directed energy and laser weaponry. A high-energy laser strikes its target at the speed of light for just a few cents of electricity to a few dollars a shot. Further, since it runs on electricity rather than missile stock, it never runs out of interceptors as long as it has power. This might be the cheap defence the Gulf needs. Saudi Arabia and the UAE have tried to test and deploy them; Chinese laser systems have appeared in the UAE and the US and Israel also hope to supply this technology to the Gulf. However, laser is a partial answer: its beam weakens in dust, haze, and humidity (features of the Gulf’s climate) and top-tier ballistic and cruise missiles might still require expensive interceptors. A laser needs dwell time on the target and engages sequentially, which would not work for a swarm. Lasers defending US bases in Iraq have been called “cumbersome and ineffective.”

Proportionality and cost-effectiveness depend on the system, not a single shot. A strong command system should match each threat with the cheapest adequate response: interceptor drones and lasers for low-cost threats, expensive Patriot or THAAD interceptors for ballistic attacks. The aim is to create an architecture in which the cheapest adequate tool usually handles threats, while the expensive ones hardly have to.

This mix exists, but only for the wealthiest states. The UAE has the one of the most comprehensive and  diversified defence architectures in terms of procurement. Saudi Arabia has the largest defence budget in the GCC and possesses a multi-layered system as well. Qatar has also invested in diversification but does not own any laser weapons yet.  Bahrain and Oman host expensive defence systems but lack diversification, possibly due to having the smallest defence budgets in the Gulf. Kuwait similarly lacks a comprehensive defence system and is the only Gulf country without any sea-air defence capability. The portfolio depends on the money, which means that the cost–exchange problem bites hardest where the means to address it are the most limited. Greater Gulf coordination and collective defence, therefore, are the solutions.

Time- and Cost-Effective Production

A cheap and accurate form of defence still fails if it cannot be replaced in time. This is a structural asymmetry that affects Gulf nations. A Patriot interceptor takes more than two years to build, with Lockheed Martin producing 600 of them a year currently. . While the Pentagon signed a deal to increase this production to 2,000 a year, this number will be achieved only by 2030. Iran, in contrast, produces more than 200 Shaheds a month. A saturation campaign cannot be out-purchased on a two-year replenishment cycle. Therefore, the Gulf must learn to build, not just buy.

The first move will be to bring fast and cheap production curve onshore. The drone deal with Ukraine is not only an arms sale but an industrial transfer with joint production, technology-sharing and some 200 troops running drone interceptor demonstrations. Signing deals to localise attritable drone systems, such as the recent one between the US firm Vector and Saudi Arabia’s SR2 Defense Systems, would enable Gulf partners to respond quickly to threats while reducing exposure to disrupted global supply chains. Abu Dhabi too has moved towards self-sufficiency, with the state-backed EDGE Group building indigenous counter-drone capability and positioning itself as a regional supplier, not just a buyer.

The second move would be to diversify partnerships with other countries. In June 2026, Australia’s Electro Optic Systems took a US$124 million counter-drone order from the UAE and signed an agreement to build laser weapons in the region. South Korea also has a defence deal with the UAE, while the United Kingdom (UK) has sent Typhoon fighter jets to Qatar.  Turkey is negotiating the resale of its unused S-400 air defence systems to the Gulf.

However, initiatives announced in 2026 cannot replenish defence supplies immediately. The most advanced interceptors, Patriot and THAAD, are still not produced in the Gulf. Consequently, the goal should be to indigenise the cheap and attritable drones and counter-drones. Since these are deployed in large numbers, it would ensure that part of the war is fought at a scale and timeline the Gulf can control.

The Convertibility Problem

Overall, the Gulf’s predicament is not simply a budget problem. It is the inability to convert wealth into protection at a survivable rate of exchange. The expensive shields failed because the market was rigged against them: a US$4,000,000 interceptor against a swarm of US$40,000 drones. Low-cost and proportional defence does not mean purchasing a perfect shield. It is an attempt to rewrite the math of the war, perhaps by driving the cost of countering a threat below that of launching one. The Gulf cannot buy invulnerability—no one can—but a better exchange rate is possible. In an age when offence has become cheap and abundant, defence should aim to emulate the same.

Samriddhi Vij is an Associate Fellow, Geopolitics, at ORF Middle East.

The author acknowledges the use of Claude Opus 4.8 to conduct background research.