War in Iran is Chewing Through American Missile Stockpiles

What It Covers

Odd Lots examines the U.S. missile stockpile crisis triggered by the March 2026 Iran war, featuring CSIS missile defense director Tom Carico explaining how two weeks of conflict has consumed hundreds to thousands of precision munitions, created dangerous capability gaps in the Pacific, and exposed a severely underfunded procurement system.

Key Questions Answered

• •Stockpile depletion risk: The U.S. has expended hundreds, likely thousands, of offensive and defensive missiles within two weeks of the Iran conflict. The Joint Chiefs chairman confirmed stockpiles are sufficient for this conflict but explicitly not for simultaneous Pacific deterrence, forcing THAAD systems to be physically relocated from South Korea and Japan to the Middle East.
• •Production ramp timeline mismatch: Planned production increases — Tomahawks from 57 to 1,000 per year, Patriot interceptors from 600 to 2,000 per year, THAAD quadrupled — cannot offset current consumption because the FY2026 appropriations bill arrived $28.8 billion short of Pentagon munitions requests, preventing contracts from being placed to start the seven-year ramp.
• •Asymmetric cost framing is misleading: The widely cited $20,000 drone versus $4,000,000 interceptor cost comparison omits the full operational picture. Iranian Shahed drones actually cost $50,000–$80,000, lack the 500-pound warheads of Tomahawks, and the dominant costs of any operation are aircraft carrier steaming, jet fuel, personnel, and facility repair — not individual munitions.
• •Munitions transition signals progress: When Iranian air defenses are degraded sufficiently, the U.S. can shift from expensive standoff Tomahawk cruise missiles to cheaper gravity bombs like JDAMs and small diameter bombs, which are plentiful. General Kane's use of the phrase "munitions transition" in press briefings signals this shift is underway, reducing per-strike costs substantially.
• •Allied supply chain entanglement: 18 countries operate Patriot systems purchased from the U.S., but the Biden administration had to suspend deliveries to all of them to prioritize Ukraine. Asking allies to buy American while being unable to fulfill existing orders creates a credibility problem that undermines interoperability goals, particularly for the Aegis-Tomahawk network shared with Australia and Japan.