U.S. Military Operations Against Iran: Munitions And Missile Defense

Hannah D. Dennis and Daniel M. Gettinger

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Congress has expressed interest in the status of the U.S. military’s inventories of munitions (e.g., ammunition, bombs, missiles, torpedoes, anti-aircraft weapons, missile interceptors). Since the United States and Israel launched military operations against Iran on February 28, 2026, some Members of Congress have sought information on the stockpiles and availability of U.S. weapons from the Department of Defense (DOD, which is “using a secondary Department of War designation,” under Executive Order 14347 dated September 5, 2025).

Some Members have raised concerns about potential shortfalls in munitions, while other Members have said munitions are not an immediate concern. President Donald J. Trump has said U.S. munitions are “virtually unlimited.” DOD officials have said sufficient munitions are available, while maintaining that the status of U.S. stocks is considered “an operational security matter.” In these comments, officials have not differentiated between stocks of air-to-ground and air-to-air munitions versus missiles and missile interceptors.