US Depletes Nearly 80% of THAAD Interceptor Stock Amid Iran Conflict

The United States has used nearly 80% of its THAAD missile interceptors during recent hostilities with Iran, according to a CNN report on August 5, 2026. The Pentagon also deployed about half of its Patriot missile interceptors and a significant portion of its Tomahawk cruise missiles, further straining its missile defense and offensive capabilities.

Prior to the conflict, the US held approximately 452 THAAD interceptors and 2,200 Patriot interceptors, key systems protecting American forces and allies in the Middle East. The depletion of these stocks has raised concerns among Gulf allies about the US's ability to defend them if tensions with Iran escalate again. These concerns reportedly influenced President Donald Trump's decision to cancel a planned major strike on Iran.

Senior US military officials, including Joint Chiefs Chairman Dan Kain, have warned that the Pentagon's munitions inventory is at a dangerously low level. The US Department of Defense has accelerated production efforts, recently signing agreements to increase production of Patriot and THAAD missile rocket motors. However, experts estimate it will take years to fully replenish these advanced missile stocks due to lengthy manufacturing times.

The shortage affects both defensive and offensive arsenals, with the US using nearly all its long-range precision missiles and about half its Tomahawk missiles during the conflict. The Pentagon currently receives about 15 new Tomahawk missiles and 20 Patriot interceptors monthly, a rate insufficient to quickly restore depleted inventories. This munitions shortage has become a critical factor in US military planning and regional security dynamics in the Gulf.