American allies are watching in disbelief as the Pentagon reroutes weapon shipments to aid the Iran war, angry and scared that arms the U.S. demanded they buy will never reach them.

European nations that have struggled to rebuild arsenals after sending weapons to Ukraine fear they won’t be able to ward off a Russian attack. Asian allies, startled by America’s rate of fire, question whether it could embolden China and North Korea. And even in the Middle East, countries aren’t clear if they will get air defenses from the U.S. for future priorities.