US Patriot missile stocks in Europe critically depleted after Iran conflict

U.S. and NATO officials have described the stock of Patriot missile interceptors in Europe as "beyond critical," a shortage driven largely by the diversion of these advanced weapons to the conflict with Iran. The depletion has raised concerns about NATO's ability to defend against a potential Russian ballistic missile assault.

Speaking on condition of anonymity, a U.S. defense official in Europe and a NATO official said the shortfall is most acute for Patriot interceptors, which are uniquely capable of shooting down high-speed ballistic missiles. In the event of a Russian strike on a military headquarters or critical infrastructure, NATO could be forced "to take punch after punch in the mouth," the U.S. official said, drawing a parallel to Ukraine's experience.

The U.S. military in Europe reportedly lacks enough Patriots to stop a sustained missile attack and would have only "very limited" capability against a single strike or a stray missile. The situation stems from the large-scale transfer of interceptors to the Middle East, where U.S. and Gulf forces have expended significant numbers to counter Iranian drones and missiles.

While a Russian attack on NATO is not considered imminent, European officials have warned that Moscow could be in a position to strike by 2030. The Pentagon declined to comment on specific stockpile levels, and a senior NATO military spokesperson disputed the characterization, asserting that the alliance has enough air defense munitions to defend itself and support Ukraine.

Experts note that the Patriot shortage is also felt acutely in Ukraine, which relies on the system to counter Russia's most advanced ballistic missiles. The Iran war has been the tipping point for inventories, according to analysts, as Middle East stocks were drained unexpectedly and quickly, exposing supply chain constraints.

The U.S. military in Europe is also facing critical shortages of the Army Tactical Missile System (ATACMS), though the overall munitions picture is less dire due to European alternatives like the Taurus and Storm Shadow missiles. One potential alternative for air defense is the Franco-Italian SAMP/T NG system, though it has not yet been battle-tested and has a shorter range than the Patriot.

NATO is taking steps to address the shortfall, with Europe's first Patriot missile production facility expected to open in Germany in September. However, analysts point out that some countries, like Germany, have purchased the expensive Patriot systems but currently lack ammunition to fire from them. The immediate risk of a Russian attack may be mitigated by Moscow's focus on its war in Ukraine, which could limit its ability to fight an air war on two fronts.