The United States has expended a large share of its pre-war inventory of Patriot, THAAD, and Tomahawk missiles during the first weeks of war with Iran [1, 2].
This depletion creates a critical vulnerability in U.S. defense capabilities. The rapid consumption of these precision weapons suggests that existing production capacity cannot keep pace with the demands of high-intensity conflict [3, 4].
According to an assessment by the Center for Strategic and International Studies (CSIS), the U.S. expended roughly one-third of its combined pre-war inventory of seven critical precision weapons during the first 39 days of the war [1]. This period of fighting occurred primarily between March and April 2026, ending with a cease-fire announced on April 7 [1, 5].
The most severe shortages appear within the THAAD interceptor stockpile. Reports indicate that between 190 and 290 of approximately 360 THAAD interceptors may have been fired [1]. This represents about 80% of the total THAAD stockpile [1].
The Pentagon is currently rushing to refill these stocks [3]. The rapid drain was caused by intensive missile strikes against Iranian targets and the need to intercept incoming threats [3, 4]. While some reports suggest more than half of the key arsenal is gone, other assessments place the combined depletion of critical precision weapons closer to 33% [1, 2].
President Donald Trump (R-TX) said on July 12 that the cease-fire in the conflict is "over" [2].
“The U.S. expended roughly one-third of its combined pre-war inventory of seven critical precision weapons”
The rapid exhaustion of high-end interceptors and cruise missiles highlights a systemic gap between U.S. industrial production and the operational requirements of a modern peer-conflict. The fact that a 40-day window of fighting could deplete 80% of a specific strategic asset like THAAD indicates that the U.S. may lack the sustainable surge capacity necessary for prolonged engagements without significant replenishment delays.
