A report released on November 10 by the Center for Strategic and International Studies (CSIS) estimated that the 39-day war against Iran and subsequent military operations have depleted one-third to two-thirds of the U.S.'s pre-war stockpile of various key munitions. Specifically, approximately 1,596-1,697 Patriot interceptors were consumed, representing about 69%-73% of the pre-war stockpile of 2,330; 239-254 THAAD interceptors were consumed, representing about 53%-56% of the 452 THAAD interceptors; and over 1,100 Tomahawk cruise missiles were consumed, representing about one-third of the pre-war stockpile of 3,100. According to the Department of Defense's current delivery schedule, Patriot and THAAD stockpiles are expected to return to pre-war levels by the end of 2029, while Tomahawk stockpiles are not expected to return until early 2031. CSIS pointed out that most munitions take 2-4 years from congressional appropriations to delivery; the real bottleneck is not funding, but production and delivery time. Currently, the annual production of Patriot missiles is approximately 600, with a target of increasing to 2,000 by 2030. The report argues that the United States still has the capability to engage in another war with Iran, but its depleted ammunition resources are putting greater pressure on its ability to respond to high-intensity military conflicts.
