One month into the US-Iran war, President Donald Trump faces a problem with no modern precedent in Atlantic alliance politics: not a single major NATO ally is willing to provide meaningful military support for the campaign.
The refusal is not limited to one country or one dimension of the conflict. Spain has closed its airspace to US military flights. Italy has denied access to its Sicilian bases for American bombers. The United Kingdom permits only defensive operations from bases on its soil. France has blocked its airspace for Israel-bound US weapons shipments. Poland has refused to relocate its Patriot missile batteries. Germany’s defence minister has flatly declared it “not our war.” And when Washington proposed a multinational naval coalition to reopen the Strait of Hormuz, every European ally it approached — Italy, the UK, France, and Greece — said no.
The breadth of the pushback has no clear parallel in the 77-year history of the North Atlantic Treaty Organisation.
Trump’s NATO Ultimatum
In an interview with The Telegraph published on March 31, Trump said he is “strongly considering” pulling the United States out of NATO, describing the alliance as a “paper tiger” that takes American protection for granted while refusing to reciprocate.
They take and they take and they take. We protect them, we defend them, and when we need something — anything — they hide behind their lawyers and their rules. It’s a very bad deal for America.
On Truth Social, Trump directed a message at European leaders regarding the Strait of Hormuz blockade, urging them to “buy from the U.S.” and to “build up some delayed courage, go to the Strait, and just TAKE IT.”
Secretary of State Marco Rubio reinforced the administration’s frustration in an interview with Al Jazeera, saying that if NATO is “just about defending Europe” then that is “not a very good arrangement” for the United States.
Country-by-Country Breakdown
The European positions, while varying in tone, converge on a single conclusion: this war does not trigger alliance obligations, and participation is a national choice — one that each has made in the negative.
| Country | Position | Key Action | Key Statement |
|---|---|---|---|
| Spain | Full opposition | Closed airspace to US military planes | PM Sanchez: war is “unjustifiable” and “dangerous” |
| Italy | Case-by-case denial | Denied Sicily base for US bombers | Corriere della Sera: “evaluated and denied” |
| United Kingdom | Defensive only | Bases restricted to defensive missions | PM Starmer: “This is not our war” |
| France | Airspace blocked | Refused overflight for Israel-bound weapons | Trump called refusal “VERY UNHELPFUL” |
| Poland | Domestic priority | Refused Patriot system relocation | Defense Minister: “Poland’s security is an absolute priority” |
| Germany | Non-involvement | No military contribution offered | Defense Minister Pistorius: “This is not our war. We have not started it.” |
| Greece | Naval refusal | Rejected Strait of Hormuz coalition | No public statement |
Spain’s decision has been the most confrontational. Prime Minister Pedro Sanchez publicly called the US-led campaign “unjustifiable” and “dangerous for global stability,” prompting Trump to threaten trade reprisals against Madrid. Spain hosts approximately 4,350 US military personnel across its bases, and the airspace closure applies specifically to Iran-related operations.
Italy’s position has been framed more cautiously. The government told reporters it would assess requests on a “case-by-case basis,” but according to Corriere della Sera, the first such case — a request to use the Sigonella air base in Sicily for bomber operations — was evaluated and denied.
This is not our war. We will not be drawn into the conflict.
The UK’s stance is notable for its directness. Prime Minister Keir Starmer’s statement that “this is not our war” marked a sharp departure from the historically close US-UK military relationship. British bases remain available for what the Ministry of Defence described as “defensive and intelligence missions,” but offensive operations connected to the Iran campaign have been ruled out.
France’s refusal to open its airspace for US weapons transfers to Israel — a move Trump criticised as “VERY UNHELPFUL” in a post on Truth Social — reflects Paris’s broader concern about being implicated in the conflict. French officials have not publicly commented on the specific incident but have repeatedly called for a ceasefire and diplomatic solution.
The Strait of Hormuz Standoff
Perhaps the most consequential European refusal concerns the Strait of Hormuz. Iran’s naval operations have brought commercial traffic through the strait to what shipping analysts describe as a near-total halt, contributing to oil and gas price increases of approximately 60 percent since the war began on February 28.
Washington proposed assembling a multinational naval coalition to escort commercial vessels through the strait and deter Iranian interference. The initiative found no European takers. Italy, the United Kingdom, France, and Greece all declined to contribute warships, citing the risk of direct confrontation with Iran and the absence of a United Nations mandate.
France's Alternative Approach
France has instead pursued a parallel track, engaging approximately 35 countries in discussions about a post-war mission to reopen and secure the strait. The distinction is deliberate: Paris is willing to participate in stabilisation after the fighting stops but not in operations that could make it a party to the conflict.
The Article 5 Question
The legal backdrop to the dispute is NATO’s Article 5, the mutual defence clause that commits members to treat an attack on one as an attack on all. European governments have uniformly argued that the US-Iran war does not trigger Article 5 because the United States initiated the military campaign rather than responding to an armed attack on its territory.
This interpretation is broadly shared among NATO legal scholars, though the Trump administration has not explicitly invoked Article 5. The administration’s argument is more political than legal: that allies should support the United States out of solidarity and shared interest, regardless of the treaty’s formal obligations.
The bond of NATO weakens further. You have a situation where the United States is fighting a major war and every significant European ally has said, in one way or another, ‘count us out.’ That has never happened before at this scale.
Strategic Implications
The standoff carries risks for both sides of the Atlantic. For Europe, the danger is that Trump follows through on his threat to leave NATO or, short of formal withdrawal, reduces the US commitment to European security in ways that weaken deterrence against Russia. Poland’s refusal to relocate Patriot systems is particularly sensitive in this context — Warsaw depends heavily on US security guarantees and has been among NATO’s most pro-American members.
For the United States, the lack of allied support means conducting the Iran campaign without the logistical, basing, and overflight advantages that European cooperation has traditionally provided in Middle Eastern operations. The 2003 Iraq War, while controversial, still drew military contributions from the UK, Poland, and other allies. The current conflict has drawn none.
The broader question is whether the US-Iran war marks a structural break in the transatlantic relationship — a moment when the assumption of shared strategic interests between the United States and Europe ceased to hold — or a severe but temporary crisis that can be resolved once hostilities end.
As of April 1, 2026, day 32 of the war, the answer remains unclear. What is clear is that every major European NATO member has concluded, independently, that the costs of supporting the US campaign outweigh the costs of defying Washington. That calculation, whether it proves correct or catastrophic, is without precedent in the alliance’s history.
Did You Know?
- NATO’s Article 5 has been invoked only once in the alliance’s history — on September 12, 2001, the day after the attacks on the United States. The mutual defence clause was designed during the Cold War to address a Soviet invasion of Western Europe, not expeditionary wars in the Middle East.
- The Strait of Hormuz handles roughly 20 percent of the world’s daily oil supply. Its near-closure has contributed to the steepest sustained energy price spike since the 1973 Arab oil embargo, with cascading effects on inflation and industrial output across Europe and Asia.
- Spain is not the first NATO ally to close airspace to the US during a conflict. In 1986, France denied overflight rights for the US bombing of Libya, forcing American F-111 aircraft to fly a circuitous route from bases in England.
- Trump’s threat to leave NATO would require Congressional approval under the NATO Support Act, passed in 2023 with bipartisan support. The law requires a two-thirds Senate vote or an Act of Congress to authorise withdrawal from the alliance.
This analysis is based on reporting by The Telegraph, Al Jazeera, Corriere della Sera, BBC, Reuters, and statements from government officials. WarEcho maintains editorial independence and does not endorse the positions of any party to the conflict.