US missile stockpiles shrink as Iran war strains defenses

WASHINGTON (MNTV) — The United States has significantly depleted its stockpile of advanced missile interceptors during months of fighting with Iran, raising concerns that Washington’s ability to protect its forces and sustain future military operations is being undermined by a conflict critics say has become increasingly costly and strategically unsustainable.

A new analysis by the Washington-based Center for Strategic and International Studies (CSIS) found that repeated interceptions of Iranian ballistic missiles and drones have substantially reduced US inventories of Patriot and Terminal High Altitude Area Defense (THAAD) interceptors, potentially forcing American commanders to take greater risks if hostilities continue.

According to the report, Patriot missile inventories have fallen by at least 65% since the war began, dropping from an estimated 2,330 interceptors before the conflict to between 759 and 827 after the latest fighting.

THAAD interceptor stocks have also declined sharply, remaining at least 38% below pre-war levels despite limited replenishment efforts.

The warning gained renewed significance after the US military confirmed intercepting multiple Iranian ballistic missiles launched at American forces in the Middle East during Tehran’s latest retaliation.

Although the missiles were destroyed before reaching their targets, analysts said every interception further erodes Washington’s limited supply of high-end defensive weapons.

CSIS senior adviser Mark Cancian said shrinking inventories could compel US forces to alter their air defense strategy by firing fewer interceptors against incoming threats or accepting a greater risk that some Iranian missiles and drones penetrate defensive shields.

In some cases, commanders may even choose not to intercept projectiles expected to land away from populated areas in an effort to preserve scarce missile supplies.

The findings add to growing criticism of the Trump administration’s military campaign against Iran, which has imposed mounting financial and strategic costs while exposing American forces to repeated retaliatory attacks across the Middle East.

According to US officials, Joint Chiefs of Staff Chairman Gen. Dan Caine has privately advised President Donald Trump that declining munitions stockpiles could increasingly influence military planning and operational decisions.

The Pentagon, however, rejected suggestions that US military capabilities had been weakened, insisting American forces retain sufficient firepower to respond wherever required.

The conflict has already claimed the lives of 18 US service members, including troops killed in Iranian attacks in Jordan and Iraq.

Defense Secretary Pete Hegseth told lawmakers the war has cost approximately $37.5 billion, while the Pentagon is seeking an additional $67 billion from Congress to replenish depleted weapons inventories, including Patriot and THAAD interceptors.

Critics argue the growing demand for expensive missile defenses exposes the long-term consequences of Washington’s military strategy, warning that prolonged operations against Iran risk weakening US preparedness for other potential conflicts, particularly in the Indo-Pacific.

Previous CSIS assessments estimated it could take at least three years to fully restore stocks of Patriot, THAAD and Tomahawk missiles.

The report concludes that unless production accelerates dramatically, continued military operations against Iran could further strain US defense capabilities, forcing Washington to balance battlefield demands against increasingly limited supplies of its most advanced air defense systems.