US warns European allies of weapons delivery delays

The United States has started warning allies that delivery of weapons systems are likely to be delayed because stockpiles have been drained during the war in Iran.

The Department of Defense has warned several allies in Europe -- including the United Kingdom, Poland, Norway and Estonia -- that there will be delivery delays for several missile systems, Breaking Defense and The Financial Times reported.

The delays, which may also spread to deliveries to Asian allies, have been linked to growing concerns about the numbers of U.S. weapons used since the war in Iran started.

Concerns have also come up as to whether lower stockpiles could affect the United States’ ability to defend itself and its allies.

The Department of Defense already has been relocating weapons from bases in other parts of the world both to the U.S. stockpile and for use in the Iran war, which President Donald Trump noted on Friday.

“All over the world, we have inventory,” he said. “And we can take that if we need it.”

Among the weapons systems that could be affected are the HIMARS and NASAMS missile systems, shortages of which were reported in Estonia and Norway in April.

The president of Finland also said in recent days that some U.S. weapons stockpiles normally stored in the country have been rerouted, which lines up with Trump’s comments yesterday.

In Asia, Japan and South Korea are reportedly bracing for delays beyond the ones it already has not received, including Patriot missile interceptors and Tomahawk cruise missiles.

Delays that have already happened, and the potential for more, could affect foreign nations’ reliance on weapons manufactured by the United States, experts have said.

“Japan already was deeply frustrated with delivery delays for systems they have paid for,” former Pentagon official Christopher Johnstone told the Financial Times.

“This reality will drive Japan, South Korea and other allies to focus more heavily on indigenous and non-American options, even in areas where U.S. equipment is clearly superior,” he said.

The reports of delays come after Defense Secretary Pete Hegseth on Thursday told members of the Senate Arms Services Committee that he is aware of concerns about the stockpile after two months of an intense campaign in Iran.

In response to questions about the Pentagon’s request for a nearly 50% increase in its budget, Hegseth noted that some of the increase is because of weapons used during the war, and that it could take “months and years” to fully replenish the stockpile.

Trump has asked defense companies to “quadruple” their manufacturing pace, but there are limits to how much production can be sped up, according to industry experts.

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This story was originally published May 2, 2026 at 12:50 PM.