Israel–Iran War: IDF Denies Reports Air Defences Are Running Critically Low

As the Israel–Iran war intensifies, debate has emerged over whether Israel's missile defence network is under strain. Reports in international media suggested the country could be running low on interceptor missiles, raising concerns about its ability to defend cities from Iranian ballistic attacks.

Israel's military has pushed back strongly against those claims. Officials from the Israel Defence Forces say their stockpile of interceptors remains sufficient and that the country's layered air defence systems can handle the ongoing threat from Iran, rejecting reports of a shortage.

Yet behind the official denials lies a deeper strategic question often raised by military analysts during high-intensity conflicts. What happens if missile barrages become too large to intercept every threat?

IDF Pushes Back on Claims of Interceptor Shortage

The controversy began after reports from US officials suggested Israel might face a shortage of Arrow missile interceptors, a key component of the country's long-range missile defence system designed to destroy ballistic missiles before they reach populated areas.

The IDF has rejected that narrative. Military officials indicated the force is not running critically low on interceptor missiles and stressed that planning for the current operation took place months in advance. According to the military, planners factored in Iran's known missile capabilities before launching the campaign.

Officials also emphasised that Israel entered the conflict aware that Iran possessed roughly 2,500 surface-to-surface missiles, a stockpile that could pose a major threat if fired in large numbers. Despite the scale of that arsenal, the IDF says the number of missiles actually fired so far has been lower than anticipated.

In the early phase of the conflict, Israel expected Iran might launch several hundred ballistic missiles in its first major retaliation. Instead, about 100 were initially fired, while roughly 470 missiles were launched during the first week of fighting.

How Israel's Air Defence System Works

Israel's air defence network is widely considered one of the most advanced in the world. The system operates in multiple layers designed to intercept different types of threats. Long-range ballistic missiles are primarily handled by the Arrow defence system, while other platforms such as David's Sling and Iron Dome address medium-range and short-range attacks. Together, these systems form the backbone of Israel's air defence, protecting both military infrastructure and civilian population centres.

But even the most advanced systems have limits. Military officials acknowledge that missile defence is never perfect. According to the IDF, between 5% and 10% of incoming missiles can 'leak' through defences, either because interception attempts fail or because the military chooses not to intercept projectiles headed toward open areas where they are unlikely to cause damage.

The Strategic Pressure of Iran's Missile Arsenal

Iran's missile capability remains one of the biggest challenges facing Israel's defence planners. Ballistic missiles travel at extremely high speeds and can reach Israeli territory in minutes. That leaves little time for radar tracking, interception decisions and missile launches.

The IDF has said it has already destroyed a significant portion of Iran's missile launch infrastructure during the campaign. But Iran still possesses a large arsenal of Iran ballistic missiles, which could be used in further waves of attacks. If barrages intensify, defence planners could face difficult operational choices about how to prioritise interceptions.

A War That May Last Longer Than Expected

Israel's military leadership has warned the public to prepare for a prolonged conflict. Even with a robust Israeli missile defence system, the war has demonstrated how quickly large-scale missile exchanges can reshape military planning. A prolonged campaign could force both sides into a war of endurance, where stockpiles, logistics and production capacity become just as important as battlefield tactics.

For now, Israeli officials insist the country remains fully prepared. The IDF maintains that its missile interceptors, air defence networks and strategic planning allow it to handle the current threat environment. Still, the ongoing debate over interceptor supply highlights a broader reality of modern warfare. Missile defence can protect cities and save lives, but it is never a perfect shield.