US officials told European allies that existing production and inventory pressures are affecting delivery timelines for equipment already purchased under the Foreign Military Sales (FMS) program.

The notification reportedly affects multiple European states, including Baltic and Nordic countries that rely on US systems for air defense and battlefield support capabilities.

According to three sources familiar with the matter speaking to Reuters, several European governments had already finalized procurement agreements but have not yet received the equipment due to supply constraints. 

The officials said the disruption reflects broader strain on US defense logistics after sustained drawdowns of munitions and missile systems.

A European diplomatic official, speaking on condition of attribution, said defense ministries across the region were seeking clarification from Washington. "We are reviewing the updated delivery schedules and assessing operational gaps that may arise in the interim,” the official said.

A US defense industry representative familiar with FMS coordination said procurement timelines had become increasingly unpredictable. "Production lines are running at maximum capacity, but replenishment is not keeping pace with operational demand,” the representative said.

The White House and the Pentagon did not respond to requests for comment, while the US State Department referred inquiries to the Department of Defense. 

Lamaane News Network independently confirmed that allied embassies in Washington have requested additional briefings on the scope and duration of the delays.

The reported strain follows extensive US military assistance to multiple active conflict zones. Since the escalation of the Ukraine war in 2022 and the Gaza conflict in late 2023, the United States has drawn down billions of dollars in artillery shells, air defense interceptors, and anti-armor systems from existing reserves.

US-Israeli air operations launched on February 28, targeting Iranian military infrastructure, further intensified consumption of precision-guided munitions, according to officials briefed on defense logistics. The cumulative operational tempo has raised concerns within parts of the US defense establishment about long-term sustainment capacity.

Former and current defense planners have also pointed to internal discussions within the administration over industrial expansion. President Donald Trump met with executives from seven major defense contractors in March, as the Department of Defense pushed to accelerate replacement production for systems already deployed in recent operations.

The reported delays carry broader implications for NATO readiness planning, particularly among smaller European states that depend heavily on US supply chains for deterrence capabilities. Analysts note that sustained interruptions could force allied governments to reconsider procurement diversification and regional stockpiling strategies in the medium term.

European defense ministries are expected to continue consultations with US counterparts as they assess potential gaps in air defense coverage and battlefield logistics support.