The US depleted half its Terminal High Altitude Area Defense (THAAD) interceptor stockpile defending Israel from an Iranian missile attack, using some 200 THAADs and over 100 other missiles. This has sparked concerns about US military readiness and alarmed allies like Japan and South Korea. A congressional study warns it will take years to replenish the stockpile due to insufficient production capacity.
US interceptor deployment defending Israel
- ▪Pentagon chief spokesman Sean Parnell stated that the US and Israel "carried the defensive burden equitably" during the joint "Operation Epic Fury"
- ▪The US also used more than 100 Standard Missile-3 and Standard Missile-6 interceptors from Navy ships in the Mediterranean Sea
- ▪The US reportedly used double the number of interceptors against Iranian missiles compared to those deployed by the IDF
- ▪The US deployed approximately 200 Terminal High Altitude Area Defense (THAAD) interceptors, representing roughly half its total stock, to defend Israel from Iran
Iranian ballistic missile threat
- ▪Israel also used its interceptors, including fewer than 100 Arrow 3 missiles and 90 David's Sling systems, against attacks from the Houthis in Yemen and Hezbollah in Lebanon
- ▪The US and Israeli interceptors were used against Iranian ballistic missiles targeting Israel, which are described as sophisticated and powerful
US missile stockpile depletion concerns
- ▪A US Congress study published on March 25th warned that the high rate of interceptor use has further reduced the limited US stock
- ▪The rapid depletion of the US missile stockpile has raised concerns about the country's ability to defend against other military threats
Allied nations' security worries
- ▪Japan and South Korea face threats from China and North Korea and rely on US forces for deterrence
- ▪In June 2025, the US deployed three of its eight Patriot batteries to the Middle East, returning them to South Korea in October 2025
- ▪US allies, particularly Japan and South Korea, have expressed concern over the depletion of US interceptor stockpiles
Interceptor production capacity shortfalls
- ▪A US Congress study concluded it will take years for the US to replenish its stock of interceptors
- ▪The US lacks the production capacity to replenish its interceptor stockpile in the short term at the current rate of use
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