One of the most striking features of the ongoing war between Israel and Iran is how swiftly it has escalated and how quickly it might conclude. This is not a war of territory. It is not a contest of political systems or ideologies, at least not directly. It is a war of inventories. Absent a surrender or ceasefire deal, whoever runs out of missiles or interceptors first loses.
That is the cold, logistical arithmetic of this moment.
Let us begin with Iran. Open-source defence estimates place Iran’s total ballistic missile stockpile at around 3,000; however, that number is misleading. Many of those are short-range systems aimed at regional targets, such as US bases in Iraq or adversaries in the Persian Gulf. When it comes to missiles capable of reaching Israel, specifically those with a range of at least 1,300 to 2,000 kilometres, the actual number diminishes to between 1,000 and 2,000. These include the Shahab-3, Ghadr, Emad, Sejjil, and Khorramshahr series of medium- and intermediate-range ballistic missiles. Additionally, Iran possesses a smaller number of long-range cruise missiles, such as the Hoveyzeh. Iran’s strategic missile arsenal is significant but not bottomless.
That reality has become painfully clear in the past week of fighting. Iran’s opening salvo was a well-planned barrage of approximately 150 ballistic missiles on the first night. It was intended to overwhelm Israeli missile defences, but it fell far short of the 1,000-missile assault Tehran reportedly hoped to launch. This was due to Israel pre-emptively targeting Iranian launch sites and command centres. What was meant to be a knockout punch has turned into a glancing blow.
Since then, the tempo of Iranian strikes has slowed significantly. Iran has launched approximately 468 missiles in total, which is nearly one quarter of its estimated usable stockpile. Furthermore, the daily barrages are diminishing from over 100 on day one to single-digit salvos by day five. This is not about restraint; it is about logistics. Iran’s missile launch capacity is limited by the number of available launchers, estimated to be around 50 for medium-range missiles, and by the survivability of those launchers under Israeli fire. By the fourth day of fighting, Israel had reportedly destroyed over 120 launch platforms, representing about one-third of Iran’s launcher inventory.
The situation is worsening for Tehran. Iran’s monthly missile production rate stands at approximately 50 missiles per month. At a wartime intensity, that figure is laughable. Missiles are being used up far faster than they can be replenished. Furthermore, with Israel targeting missile factories, even that estimate of 50 per month may turn out to be overly optimistic.
Contrast this with Israel’s position.
Israel’s warfighting strategy is built around one fundamental principle: short wars, fought fast, with overwhelming precision. When the war gets long or complicated, Israel relies on its one irreplaceable ally: the United States.
Let’s discuss missile defence first. The Arrow-2 and Arrow-3 systems, along with David’s Sling and American-supplied THAAD and Patriot batteries, are creating a dense shield over Israeli airspace. These interceptors are costly, yet effective. Each Arrow interceptor costs approximately $3 million. During the initial Iranian barrage, Israel’s air defence network reportedly intercepted over 90% of incoming missiles.
Of course, interceptors run out, but Israeli estimates suggest the country had enough high-end interceptors to sustain this level of defence for about 10–14 days. After that, without resupply, they would have to ration, prioritising critical infrastructure and densely populated areas. That is why American resupply is crucial.
The US maintains a War Reserve Stockpile in Israel valued at nearly $2 billion. This includes precision bombs, artillery shells, and other vital munitions. At the start of the Gaza conflict, over 200 American cargo flights delivered military supplies to Israel within just weeks. This same logistical capacity is already being flexed in this war.
Beyond defence, Israel’s offensive capability is equally potent. The Israeli Air Force has conducted hundreds of sorties since the war began, targeting Iranian missile bases, nuclear sites, and drone factories. These operations rely on a combination of US-made and Israeli-made precision-guided munitions. While Israel manufactures its own smart bombs, drones, and standoff weapons, it also relies heavily on American stockpiles.
The key difference between Israel and Iran is that Israel can burn through its munitions and get them replaced. Iran cannot.
Wars typically conclude when one or both parties reach the limits of their capabilities or resolve. In this instance, only one side is nearing the former. Iran has likely already exhausted one-third to half of its long-range missile inventory. Its production lines are under siege. Its launchers are being targeted. The few missiles remaining are being used sparingly.
Israel, for its part, is spending vast sums of money. By some estimates, it is costing nearly $300 million a night to maintain its missile defence posture, but its war reserves are substantial, and American support is essentially guaranteed, for now.
Neither side wants a long war. More importantly, only side can sustain one. Iran began with quantity, but it is depleting that stockpile. In contrast, Israel started with access to US resupply, superior logistics, and precision firepower.
Here is the uncomfortable truth for Iran: its entire missile doctrine (and, indeed, their now-destroyed proxy “ring of fire”) was designed to deter, not deliver. The moment those missiles leave the launcher they begin to diminish in value. Without the ability to replace them quickly or to deter further retaliation, Iran finds itself losing power without gaining leverage.
Israel is haemorrhaging money but not capability. With each passing day, it is eliminating Iranian launchers, decimating factories, and depleting Tehran’s strategic inventory, all while being rearmed by its most powerful ally.
This is not a war that both sides planned for, but it is a war that Israel is structurally better prepared to win. There is a possibility it will drag on for months. It may end with a dramatic surrender or with regime change in Tehran itself. As to when that will happen? We cannot say, but militarily it will culminate when one side runs out of missiles, and the other still has the means to strike. That is not a prophecy; it is simply mathematics, but the far bigger question remains: what happens then?
