Running File · US Foreign Policy Series · Last updated: March 2026

'26 FEB/MAR

💸 The Cost Exchange

⚔️ What Iran Fires

  • Shahed-136 loitering munition (kamikaze drone): ~$20,000–$50,000 per unit to produce. This is the weapon that has defined the drone era — slow, cheap, and designed to be fired in swarms. Each one forces a defender to make a choice: spend nothing and take the hit, or spend 10–100x its value to shoot it down (CFR, NDTV).
  • Short-range ballistic missiles (Fateh-110, Zolfaghar): ~$110,000–$2.1 million depending on version and guidance package. The workhorse of Iran's proxy arsenal — used by Hezbollah, Houthis, and Iraqi militias (Wikipedia).
  • Medium-range ballistic missiles (Ghadr-110, Sejjil-2, Khorramshahr): ~$5–8 million per missile. These are the systems capable of reaching Israel, US bases across the Gulf, and parts of Europe — and they are what forces Patriot, THAAD, and Arrow into the fight (GRC, Wikipedia).
  • Iran's April 2024 mass strike (170 drones, 120 ballistic missiles, 30 cruise missiles): Estimated cost to Iran — $80–100 million. Cost to Israel and its partners to intercept: approximately $1 billion. A 10:1 cost ratio in one night (GRC).

🛡️ What It Costs to Stop Them

  • Iron Dome Tamir interceptor: $40,000–$50,000 per missile in standard production; rises to $100,000–$150,000 per successful interception when radar, personnel, and fuel are included. Designed specifically for short-range rockets and artillery — its relatively low cost is the reason it exists as a distinct tier in Israel's layered defense (Britannica, Missile Defense Advocacy).
  • Patriot PAC-3: ~$3–4 million per interceptor. The US burned through over 800 Patriot interceptors — roughly $2.4 billion worth — in just the first five days of the current war with Iran. That exceeds the estimated total number of Patriots fired during the entire Russia-Ukraine war (Military Watch Magazine, Business Insider).
  • THAAD interceptor: ~$12–13 million per missile. Designed for the upper tier — taking out faster, higher-altitude ballistic missiles beyond Patriot's reach. Single most expensive interceptor in routine use (Business Insider).
  • Standard Missile (SM-2/SM-3, ship-launched): $2.1 million (SM-2) to $9.6–28 million (SM-3) per interceptor depending on variant — fired from US Navy destroyers to kill ballistic missiles in mid-course. The SM-3 is the most expensive single interceptor in the US inventory (Business Insider).
  • Iron Beam (Israeli directed energy, prototype): ~$3.50 per interception in energy costs alone — but each system costs hundreds of millions to build and field, and it only works against slower, lower-altitude threats. Proof of concept, not yet deployed at scale (Missile Defense Advocacy).

📊 The Running Tab

  • The US spent $5.6 billion in munitions in the first two days of the current conflict — a figure that alarmed Congress and exposed how quickly America's advanced weapons stockpiles can be depleted. The six-day total reached at least $11.3 billion (Washington Post, USA Today/Yahoo News).
  • The Atlantic reported that the US had only 25% of the Patriots its own planning requires — and that two or three interceptors are often needed per incoming target. The math compounds fast: two Patriots at $4M each to down one $30,000 drone is a $8M outlay to neutralize an $8 tire fire (The Atlantic, CFR).
  • The Foreign Policy Research Institute's analysis of the June 2025 Israel-Iran war concluded that Israel's missile defense performed impressively — but the system was visibly strained by the volume and variety of the attacks, a preview of the sustained attritional logic Iran has deliberately built into its strategy (FPRI).
  • Iran's strategic logic, distilled: don't win the air war — bankrupt the people running air defense. Stockpile depth and production capacity, not kill ratios, may determine who "wins" (New Arab).

🛢️

  • 20 million barrels of oil pass through the Strait of Hormuz every single day — that's roughly 20% of all global petroleum consumption, squeezed through a shipping lane that is, at its narrowest point, two miles wide (EIA).
  • Unintended Consequences: Since the US-Israel strikes began, Iran hasn't closed the strait. Instead, it's exporting more oil than before the war — about 2.1 million barrels/day, up from 2 million in February — while virtually every other Gulf producer's tankers have gone dark. Almost all ships now crossing are linked to Iran or China (Iran International). Brent crude spiked to nearly $120/barrel before settling around $92 — still 26% above pre-war levels (Capital Group).

🇮🇷 🪖

  • Iran's rial halved in value between July 2024 and March 2025. Food price inflation exceeded 70% in 2025. Youth unemployment hovers around 20–22% (UK House of Commons, FRED/World Bank). The regime running one of the most strategically consequential waterways on earth cannot afford to feed its own young people.
  • Iran's ballistic missile arsenal is the largest and most diverse in the Middle East — estimated at over 3,000 missiles, with medium-range systems capable of striking Israel, US bases in the Gulf, and across Europe (CSIS Missile Threat, Wikipedia). Yet Iran's 2024 defense budget was only $16.7 billion — a 20% increase from the prior year and already 25% of Iran's entire national budget, per SIPRI and Iran Open Data Center — compared to Saudi Arabia's $75.8 billion and the US defense budget of $886 billion. Iran is outspending itself to field a missile force that would cost any adversary orders of magnitude more to intercept (Jerusalem Post).
  • Iran's IRGC Navy built the world's most developed swarm doctrine — a fleet of over 1,500 fast-attack craft, including the new Heydar-110 missile boat capable of 110 knots (~204 km/h), designed to overwhelm US carrier strike groups through distributed, simultaneous strikes in the confined waters of the Strait of Hormuz (Defence Security Asia). The Foundation for Strategic Research (Paris) assesses that IRGC-N doctrine has long prioritized "pinpoint or swarm attacks against Western targets" as its core asymmetric deterrent (FRS). Notably, destruction of Iranian naval forces is a stated priority of the ongoing Operation Epic Fury — the US has struck naval bases, warships, submarines, and anti-ship missile sites since the conflict began, meaning this pre-war fleet is now being actively degraded (USNI News).
  • Despite sanctions, Iran has become a major drone exporter — supplying Shahed-136 kamikaze drones to Russia (over 2,400 delivered for use in Ukraine), Hezbollah, Hamas, and Houthi forces. Each Shahed-136 costs roughly $20,000–$50,000 to produce, compared to the $150,000+ cost of the missiles used to intercept them — a cost-exchange ratio that's bankrupting air defense budgets (Iran International, AP News).
  • Iran's proxy network spans five countries with an estimated combined fighting force of 200,000+ militants — including Hezbollah (Lebanon, ~100,000), PMF militias (Iraq, ~60,000), Houthis (Yemen, ~20,000), and various Syrian groups. Iran's annual spending on these proxies is estimated at $16 billion, nearly 70% of its entire defense budget, yet this has given Tehran military reach across the region without deploying a single regular soldier abroad (Irregular Warfare Initiative, This Is Beirut).