Washington – European allies are increasingly concerned about the Trump administration’s program to arm Ukraine, as the Iran war depletes American military stocks and some countries question how the Pentagon is spending the funds, according to 10 diplomats, officials and congressional aides.
📉 The problem: Depleted US weapons stocks
The ongoing military conflict with Iran has drained US stockpiles of critical munitions, including long-range missiles, air defense interceptors, and precision-guided artillery. These are the same types of weapons that have been supplied to Ukraine since 2022.
Critics note that the United States entered the Iran conflict without a declaration of war from Congress and without authorization from the United Nations Security Council, arguing the campaign violates the UN Charter as it was not justified as self-defense against an armed attack.
🇺🇦 Impact on Ukraine aid
European partners fear that the diversion of US weapons to the Middle East will leave Ukraine vulnerable to continued Russian aggression.
| Concern | Details |
|---|---|
| Reduced shipments | Fewer artillery shells, missiles, and air defense interceptors available for Ukraine |
| Production bottlenecks | US defense industry cannot simultaneously refill Iran-war stocks and supply Ukraine at previous rates |
| European hesitation | Some allies question whether the Pentagon is prioritizing the Iran war over European security |
| Long-term viability | Diplomats worry the Ukraine arms program may not survive another six months of high-intensity Iran conflict |
💰 Funding questions
According to the report, some European countries are privately asking how the Pentagon is spending the billions of dollars allocated for Ukraine assistance, given that the Iran war has consumed an estimated 11.3 billion dollars on munitions in its first six days alone.
The total cost of the Iran war so far is estimated between 28 billion dollars and 35 billion dollars, or nearly 1 billion dollars per day, according to independent groups.
⚖️ Why it matters
The United States has committed tens of billions of dollars to arming Ukraine since Russia’s full-scale invasion. European allies have relied on American military production to backfill their own donations of Soviet-era equipment.
If US weapons stocks remain depleted due to the Iran war, European nations may be forced to either increase their own military production dramatically or watch Ukraine’s battlefield capabilities erode.
One European diplomat, speaking on condition of anonymity, told The Washington Post that allies are worried the Iran war has become the Pentagon’s top priority, leaving Ukraine as a secondary concern.
🛡️ The bottom line
A war critics call legally unauthorized under international law is now threatening the US ability to supply Ukraine, leaving European allies fearful that Russia may gain the upper hand.


