Defense & Geopolitics — 2026-03-20

Iran War Munitions Burn Rate Exposes Single-Point-of-Failure in US Explosives Supply Chain

FPRI analysis reveals the US expended over 5,000 munitions in the first 96 hours of the Iran war, with total costs reaching $16.5 billion by day 12. All high explosives (RDX/HMX) flow through a single WWII-era facility -- Holston Army Ammunition Plant in Kingsport, TN -- with no second domestic source. The $200 billion supplemental request reflects not just operational costs but the structural fragility of the defense industrial base for sustained combat.

Analysis
Prior INTSUM covered the $200B supplemental and GOP fractures over cost. The FPRI analysis adds the critical detail that munitions sustainability, not just budget politics, is the binding constraint on campaign duration.

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