The Missile Shield and the Sword, How the U.S.-Iran War is Redefining Modern Air Defence
The skies over West Asia have once again become a terrifying canvas of modern warfare. The conflict between the U.S.-led coalition, including Israel and the United Arab Emirates, and Iran has escalated into a full-blown conflagration, one that is fundamentally different from its predecessors. This is not a repeat of the 12-day war of June 2025. That conflict, intense as it was, now appears to have been a dress rehearsal—a testing ground for tactics and technologies that have now been refined, expanded, and deployed on a much more dangerous scale. At the heart of this new phase of the war lies a high-stakes technological duel between Iran’s strategy of saturation attacks—unleashing swarms of cheap missiles and drones—and the coalition’s increasingly complex, layered, and expensive Integrated Air and Missile Defence (IAMD) systems. This is a war of attrition fought not just on the ground, but in the algorithms of computers, the speed of interceptors, and the delicate economics of munitions production.
To understand the current battle, one must first appreciate the sheer scale of the June 2025 conflict. At that time, the coalition faced its most significant test when Iran launched over 500 ballistic missiles and more than twice as many “suicide drones” in retaliation for earlier strikes. The coalition’s IAMD, a multi-layered network of Israeli and American systems, was stretched to its limits. The first line of defence was the Israeli Arrow 3 system, designed to engage medium-range ballistic missiles in the vacuum of space, before they re-entered the atmosphere. U.S. Navy destroyers in the Red and Mediterranean Seas contributed with SM-3 missiles, recording their heaviest combat use in history. Below that, THAAD (Terminal High Altitude Area Defence) batteries and Israel’s legacy Arrow 2 system handled targets within the atmosphere. Then came David’s Sling with its Stunner interceptors, and finally, the ubiquitous Patriot system formed the last line of defence against any that leaked through. Against the drone swarms, the coalition relied on the famed Iron Dome and its new high-energy laser weapon, Iron Beam, supplemented by air-to-air missiles from the U.S., UK, and French air forces.
The 12-day war was a victory for the coalition’s technology, but it was a Pyrrhic victory that exposed a critical vulnerability: stockpiles were depleted at an alarming rate. By the second week, Israeli interceptor inventories were dangerously low. The conflict served as a brutal warning that in a high-intensity, prolonged war, the rate of consumption of expensive interceptors could outpace the enemy’s ability to launch cheap missiles, but only just. It set the stage for the current conflict, where both sides have learned and adapted.
The current theatre of conflict has expanded to include the Persian Gulf, bringing the UAE directly into the line of fire. This has necessitated a new, more integrated regional air defence network. The UAE has now activated its South Korean Cheongung II missile system, a crucial addition that addresses specific threats in the Gulf. One of the most dangerous tactics Iran employs is the use of “skimmer” cruise missiles, which fly just above the surface of the water to stay under conventional ground-based radar. Older systems, like some versions of the Patriot, scan for objects in a 120-degree cone. If a threat approaches from outside this cone, the entire battery must physically rotate, losing precious seconds that could mean the difference between a successful intercept and a catastrophic hit. The Cheongung II, however, uses a Vertical Launch System with a rotating multi-function radar that provides 360-degree coverage without moving the launcher. Furthermore, the missile itself is equipped with its own nose radar, which activates in the final seconds of flight to guide it precisely onto a low-flying target, making it ideal for countering skimmers over the Gulf.
Alongside this new system, the coalition has deployed the latest American technology, including the Terminal High Altitude Area Defence (THAAD) and updated Patriot batteries. The THAAD system, which uses hit-to-kill technology to destroy incoming missiles with sheer kinetic energy, remains a critical component for high-altitude interception. However, the most significant tactical shift has been the need to “ration” these premier defence assets. A single Patriot Advanced Capability-3 (PAC-3) Missile Segment Enhancement (MSE) interceptor costs around $4 million. Facing a “saturation attack” from Iran, which involves firing a flurry of relatively cheap missiles and drones specifically to exhaust the coalition’s expensive interceptor inventory, the U.S. and its allies have had to become more economical.
This has led to the deployment of the U.S. military’s new Indirect Fire Protection Capability (IFPC) system in bases across the UAE and Kuwait. The IFPC ingeniously uses the AIM-9X Sidewinder, an air-to-air missile adapted for ground launch, as an interceptor. The Sidewinder is far cheaper than a PAC-3, allowing the coalition to engage lower-tier threats without depleting the strategic stockpile of Patriots reserved for more sophisticated ballistic missiles. Similarly, the U.S. Navy has deployed SM-6 missiles in a “dual” configuration, capable of intercepting ballistic missiles in their terminal phase while also being effective against Iranian fast-attack craft, offering a flexible, multi-role defence. Israel, too, has learned from the 12-day war. Its new Iron Beam laser system has become the primary defence against drone swarms. A laser intercept costs a fraction of a cent compared to a Tamir interceptor from the Iron Dome, and it has an effectively unlimited magazine as long as it has power. This allows Israel to reserve its more powerful Arrow 3 and Stunner interceptors for the more dangerous ballistic missile threats.
On the other side of this technological arms race, Iran has not been idle. The Islamic Republic has developed and deployed its own increasingly sophisticated air defence network, designed to protect its critical nuclear facilities and urban centers from coalition air strikes. The crown jewel of this network is an upgraded version of the Bavar-373 system, which Iran touts as a homegrown rival to the Russian S-400. It uses the Sayyad-4B missile, reportedly capable of engaging targets at ranges exceeding 300 kilometers. Iran claims the Bavar-373’s radar can detect stealth aircraft, a claim now under intense scrutiny as coalition strikes have reportedly hit targets in Tehran.
To cover lower altitudes and shorter ranges, Iran has deployed a layered network. The Arman Ballistic Missile Defence system, recently unveiled, is optimized to intercept short- to medium-range ballistic missiles with 360-degree radar coverage. To counter the threat of cruise missiles and advanced fighter jets like the F-35 and F-15, the Iranian military relies on the highly mobile Sevom-e-Khordad missile system. Its mobility is a key tactical advantage; it can fire a missile and quickly relocate, making it far harder for coalition forces to target its radar with a retaliatory strike. Iran is reportedly using this system, armed with Sayyad-3 missiles, to shield its most sensitive sites, such as the Natanz and Isfahan nuclear facilities. At the very lowest tier, Iran employs a mix of Russian-made Tor-M1 short-range missiles to intercept precision-guided bombs, and its own Majid and Azarakhsh systems to counter the ubiquitous threat of low-flying drones.
Despite this layered defence, reports of explosions rocking Tehran and Isfahan suggest that the sheer volume of the U.S. and Israeli barrage is overwhelming Iran’s interceptors. This points to a fundamental weakness in even the most sophisticated air defence network: the reload time. A battery, whether it’s a Bavar-373 or a Patriot, carries a limited number of ready-to-fire missiles. Once it launches a batch of six or so, it must pause to reload, leaving the site it protects temporarily vulnerable. A coordinated saturation attack, with missiles arriving in waves from multiple directions and altitudes, can exploit these windows of vulnerability. The coalition’s ability to overwhelm Iran’s defences, despite their technological advancements, underscores the brutal arithmetic of modern warfare: quantity has a quality all its own.
This brings us to the most critical strategic question facing the coalition: can its industrial base sustain a prolonged war? A sobering analysis by Major General Charles Corcoran (ret.), former chief of staff of the U.S. Air Forces Central Command, and Ari Cicurel of the Jewish Institute for National Security of America, paints a worrying picture. They note that while the U.S. Department of Defence has quadrupled production orders for THAAD and PAC-3 MSE interceptors and accelerated the deployment of directed-energy systems, the production lines are simply not equipped for a high-intensity, long-term conflict. “Production of all munitions…is far slower than current combat use or anticipated future high-intensity war requirements,” they wrote in January 2026. The most alarming statistic is that replenishing THAAD shortages alone would take at least 1.5 years at current production capacity. U.S. manufacturing, they concluded, has “not scaled for high-tempo operations in decades.”
The current war, therefore, is not just a battle for air superiority over West Asia; it is a race against time and industrial capacity. Iran’s strategy is clear: use its vast arsenal of relatively inexpensive missiles and drones to force the coalition to expend its precious, hard-to-replace interceptors. The coalition’s strategy is to integrate new, more cost-effective systems like the IFPC and Iron Beam to manage its inventory, while hoping that its technological edge and the sheer destructive power of its offensive strikes will cripple Iran’s ability to launch attacks before the defensive stockpiles run dry. The outcome of this conflict will be decided not only by the generals in the field, but by the factory workers building missiles thousands of miles away. The skies over the Persian Gulf have become a testing ground not just for new weapons, but for the very sustainability of modern, high-tech warfare.
Questions and Answers
Q1: How is the current U.S.-Iran conflict different from the 12-day war in June 2025?
A1: The current conflict is different in scale, geography, and technology. It has expanded to include the Persian Gulf, bringing the UAE directly into the fight. Tactically, both sides have adapted. The coalition has deployed new systems like the South Korean Cheongung II and the U.S. Indirect Fire Protection Capability (IFPC) to manage costs and counter specific threats like “skimmer” missiles. Strategically, the focus has shifted to “rationing” expensive interceptors in the face of Iran’s “saturation attacks.”
Q2: What is a “saturation attack,” and why is it an effective strategy for Iran?
A2: A saturation attack involves firing a large number of missiles and drones simultaneously to overwhelm an enemy’s air defence system. It is effective because even the most sophisticated defence systems have a limited number of interceptors and a finite capacity to track and engage multiple targets at once. By launching swarms of cheap munitions, Iran aims to exhaust the coalition’s expensive, limited-supply interceptors, creating gaps in the defence through which more valuable missiles can penetrate.
Q3: What is the South Korean Cheongung II system, and what specific advantage does it offer in the Persian Gulf theatre?
A3: The Cheongung II is a medium-range surface-to-air missile system that the UAE has deployed. Its key advantage is its ability to counter low-flying “skimmer” cruise missiles that fly just above the water’s surface to evade radar. It uses a Vertical Launch System with 360-degree radar coverage, eliminating the need to rotate the launcher. Furthermore, the missile has its own nose radar to guide itself in the final seconds of flight, making it highly effective against targets approaching over the Gulf.
Q4: What is the biggest logistical challenge facing the U.S.-led coalition in a prolonged conflict with Iran?
A4: The biggest challenge is the industrial capacity to replenish its interceptor stockpiles. Interceptors like the Patriot PAC-3 MSE are complex and expensive, costing around $4 million each. Current U.S. production lines are not scaled for high-intensity, long-term combat. Experts estimate that replenishing systems like THAAD could take 1.5 years at current rates, meaning the coalition could run out of defensive munitions before Iran runs out of offensive ones if the war drags on.
Q5: What are some of the key systems in Iran’s own air defence network?
A5: Iran has developed a layered air defence network. Its most advanced system is the Bavar-373, which uses the Sayyad-4B missile and is designed to rival the Russian S-400, claiming a range of over 300 km. To protect nuclear facilities, it uses the mobile Sevom-e-Khordad system. At lower altitudes, it deploys the Arman system for ballistic missiles, and Russian Tor-M1 systems along with indigenous Majid and Azarakhsh systems to counter precision-guided bombs and drones.
