The United States has utilized over 200 THAAD interceptors and more than 100 naval missiles throughout the ongoing conflict with Iran. This military engagement has depleted nearly half of the Pentagon’s inventory of one of its advanced missile defense systems, THAAD, leaving roughly 200 interceptors still available for future use. Unfortunately, production of these interceptors has been on hold since August 2023, with no plans to resume until April 2027.
#What is THAAD and Why Does It Matter?
THAAD stands for Terminal High Altitude Area Defense. It is crucial for the US military as it targets short to intermediate-range ballistic missiles. The system has been deployed to bolster Israel's defenses since October 2024 due to a rise in Iranian missile threats. The current Iran conflict, started in February 2026, follows the previous June 2025 conflict known as the “Twelve-Day War,” significantly affecting US THAAD stocks. Both conflicts have consumed most of the THAAD interceptors available in a short time frame of just over a year.
Historically, the US produced THAAD interceptors at a rate of 96 annually. At this rate, replacing over 200 interceptors lost in these conflicts would take upwards of two years. This expenditure during the current conflict has far surpassed the usage of Israel's defense systems, effectively making American missile defense the primary safeguard against Iranian missile threats.
#What Are the Production Challenges?
Lockheed Martin, the principal manufacturer of THAAD, aims to significantly scale up production. The company plans to boost output to 400 interceptors each year, which amounts to a fourfold increase from its historical output. However, the production has remained stalled since August 2023, with the expected restart not scheduled until April 2027. This four-year gap could pose a risk during a time when the United States has been consuming interceptors at an alarming rate.
This gap in production exposes a concerning weakness in the US defense capability that analysts from reputable defense think tanks, like CSIS, have been highlighting. It is important to note that the stress on US ammunition supplies extends beyond just THAAD and reflects a broader issue in national defense preparedness.