US warns allies of five-year delays in weapons deliveries

The US has told allied nations to brace for delays of up to five years on advanced weapons deliveries, a consequence of the massive munitions drawdown during Operation Epic Fury against Iran. The warning, communicated to allies in the April-May 2026 timeframe, affects some of the most critical defense systems in Western arsenals: Patriot interceptors, Tomahawk cruise missiles, THAAD batteries, and HIMARS/NASAMS ammunition.

Switzerland’s Patriot system order sits at the far end of that timeline, potentially waiting half a decade. For countries that built their defense postures around American hardware, that’s not just an inconvenience. It’s a strategic crisis.

The math behind the shortage

The numbers tell a stark story. During the Iran conflict, which began on February 28, 2026, the US deployed upwards of 1,200 Patriot interceptors and 1,000 Tomahawk cruise missiles. A Pentagon inspector general report released on September 15, 2026, documented over $22 billion in munitions spending between February and June 2026 alone, alongside what it called “strategic inventory shortfalls.”

Replenishing those stocks is not as simple as placing a bigger order. Raytheon’s current Patriot production capacity sits at roughly 600 units per year. Lockheed Martin’s THAAD line produces approximately 96 units annually. Tomahawk cruise missiles carry a lead time of around 34 months from order to delivery.

Full stock recovery across various systems is expected to take anywhere from two to more than five years, and that’s assuming production ramp-ups proceed without further disruption.

Who’s affected and how they’re responding

The list of impacted nations reads like a who’s who of US security partnerships. NATO members including the UK and Poland have received the delay warnings. Japan, a cornerstone of Washington’s Indo-Pacific strategy, is in the same position.

Multiple allied nations are now exploring alternative suppliers. European defense contractors and South Korean manufacturers are fielding increased interest from countries that previously considered American systems their default choice.

The longer game

Some funding increases and production expansions are already underway. But the physics of munitions manufacturing impose hard limits on how quickly the situation can improve. You can appropriate billions in a single vote. Building a new missile production line takes years.

South Korea’s defense exports have already been surging, and European firms like MBDA and Rheinmetall are positioning to capture demand that Washington simply cannot fill on schedule.

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