US estimated to have used 65% of total Patriot interceptor stockpile

European reserves shifted to Middle East; official says situation 'beyond critical'

Ability to counter Russian missile strikes described as 'very limited'

Full stockpile recovery expected to take considerable time

A Patriot surface-to-air missile is launched. [Yonhap]
A Patriot surface-to-air missile is launched. [Yonhap]

The war with Iran has consumed American interceptor missiles at a staggering rate, leaving Europe's air defenses dangerously thin and its leaders anxious about the Russian threat.

US defense officials stationed in Europe and NATO officials said Thursday (local time) that Patriot interceptor missile stocks held by US and NATO forces in Europe have fallen sharply, according to the AP.

The United States is estimated to have used roughly 65 percent of its total Patriot interceptor stockpile over six months of war with Iran. The mass transfer of missiles to the Middle East has driven European Patriot reserves down to a severe level.

A US defense official described the current inventory level as "beyond critical." US forces in Europe are reported to lack sufficient Patriots to repel a sustained ballistic missile campaign by Russia.

The official warned that if Russia were to launch ballistic missiles at military command centers or power plants, NATO could find itself in a situation similar to Ukraine's, which has long struggled with Patriot shortages. Even the ability to respond to a single ballistic missile strike — or a Russian missile that strays into NATO territory — is described as "very limited."

The war with Iran has been identified as the primary cause of the rapid stockpile depletion. After President Donald Trump launched the war against Iran in late February, some US missile reserves in Europe were transferred to the Middle East. The United States and its Gulf allies have since expended large quantities of interceptors, including Patriots, to fend off Iranian missile and drone strikes.

The Center for Strategic and International Studies (CSIS) estimated that the United States fired roughly 1,500 Patriot interceptors during the Iran war — equivalent to about 65 percent of the approximately 2,330 interceptors the US held before the conflict began.

Support for Ukraine has also contributed to the drawdown. The United States has supplied hundreds of Patriot interceptors to Ukraine since Russia's invasion. Experts, however, say the far larger factor behind the shortage is the unexpected and rapid consumption of missiles in the Iran war — far outpacing the planned transfers to Ukraine.

The Patriot is the cornerstone of US and NATO air defense, capable of intercepting fast-moving ballistic missiles. Europe has other systems, including the SAMP/T jointly developed by France and Italy, but analysts say none can fully replace the Patriot in the short term.

The United States and Europe have moved quickly to ramp up production. Output this year is expected to reach around 600 interceptors, and the US plans to raise annual production capacity to roughly 2,000 by 2030. Europe is also pursuing supply chain expansion, including the establishment of a Patriot missile production facility in Germany.

However, a meaningful increase in output will take time, so concerns about gaps in European air defenses are expected to persist for now. Some European countries are reported to have Patriot launch systems but struggle to secure enough interceptors to actually use them.

The Pentagon and NATO pushed back against characterizations of Europe's defenses as effectively paralyzed. NATO disputed the claim that its Patriot stocks are "beyond critical," saying the alliance maintains sufficient air defense capabilities to protect member states' territory and continue supporting Ukraine.


sjy@heraldcorp.com