THAAD stocks gutted defending Israel, years to rebuild

Summary

The 2026 Iran war drained the US THAAD arsenal. Washington deployed two of seven batteries to Israel and fired well over 100 interceptors, CNN puts it at 100–150, Iranian state media claims 200+, against a stockpile so small the Payne Institute estimates roughly a third was consumed. Replacement is glacial: the US bought ~11 THAAD interceptors last year and is due ~12 this fiscal year, at ~$12.7M each, with rebuild estimated at three to eight years. The drawdown left a gap in the global missile-defence network and, paired with the Patriot drain and Israel's own Arrow-3 shortage, exposed how a single regional barrage can exhaust the highest-tier interceptors. RUSI flagged both Israel and the US running critically low.

By the numbers

• 100–150+, THAAD interceptors fired (CNN; Iran claims 200+).
• ~1/3, share of the THAAD stockpile consumed (Payne Institute).
• ~11 / ~12, THAAD interceptors procured last year / due this fiscal year.
• ~$12.7M, unit cost of a THAAD interceptor.
• 3–8 years, estimated time to rebuild the stockpile.

Why it matters

THAAD is the upper-tier shield against medium-range ballistic missiles; only seven batteries exist. Committing two to one theatre and emptying a third of the magazine leaves thin global coverage and a multi-year hole, a costly dependency that complicates defending Israel, the Gulf and the Indo-Pacific at once.

What to watch

• Whether THAAD procurement is surged in the FY27 budget.
• Israel's reliance on US interceptors in any renewed Iran exchange.
• Lockheed's ability to lift THAAD output beyond ~12/year.