When the United States and Israel launched strikes on Iran on February 28, 2026, they did so largely alone. No NATO vote. No UN mandate. No collective deliberation among allies. And now, three weeks into a war that has sent oil prices spiraling, shuttered one of the world’s most critical waterways, and displaced millions of people, Washington is turning to its partners and asking: whose side are you on?
The answer, increasingly, is complicated.
A War Without a Coalition
On February 28, 2026, Israel and the United States launched surprise airstrikes on multiple sites and cities across Iran, killing Supreme Leader Ali Khamenei and numerous other Iranian officials. Iran hit back hard. Iran retaliated by firing missiles and drones toward Israel and countries around the Middle East, putting a virtual chokehold on the Strait of Hormuz — the narrow passage through which roughly 20% of the world’s oil trade typically passes.
That chokehold is now the central flashpoint in a rapidly widening diplomatic rift between Washington and its European allies. On Saturday, President Trump called on China, France, Japan, South Korea, the United Kingdom, and others to send warships to the Strait of Hormuz. In an interview with the Financial Times, Trump warned that “it will be very bad for the future of NATO” if countries fail to police the strait.
The allies, one by one, said no.
Europe Pushes Back — Hard
The European response to Trump’s demands has been among the most unified acts of transatlantic defiance in recent memory — and it cuts right to the heart of what the NATO alliance is actually for.
German Foreign Minister Johann Wadephul said Berlin had no intention of joining military operations during the conflict, calling for greater clarity on US and Israeli goals. German Chancellor Friedrich Merz’s spokesman stated plainly that the conflict has “nothing to do with NATO,” adding that “the mandate to deploy NATO is lacking.”
Britain was equally firm. UK Prime Minister Keir Starmer said the Strait of Hormuz mission would not be a NATO mission and stressed the UK would “not be drawn into the wider war,” though he acknowledged discussions about potentially deploying mine-hunting drones already stationed in the region.
EU foreign policy chief Kaja Kallas put it more bluntly: “This is not Europe’s war. We didn’t start the war. We were not consulted. We don’t know what are the objectives of this war. The member states do not have the wish to be dragged into this.”
France’s President Emmanuel Macron said Paris would be willing to help escort vessels through the Strait only once the situation becomes “calmer,” stressing: “We are not a party to the conflict and therefore France will never take part in operations to open or liberate the Strait of Hormuz in the current context.”
Trade Threats and Alliance Fractures
The diplomatic fallout has been compounded by the manner of US pressure. This isn’t just a request between allies — it comes with financial and political consequences attached.
Spain, a NATO member that had already clashed with Washington during the second Trump administration, refused to allow the United States to use its air bases, and Trump threatened to cut trade with the country. Earlier, Trump had signed an executive order imposing tariffs on goods from countries still trading with Iran — a sweeping move that blurs the line between military diplomacy and economic coercion.
This approach has left many European capitals asking a fundamental question: what does alliance membership actually mean when one partner launches a war unilaterally, then demands the others clean up the consequences?
Estonia’s Foreign Minister said US allies in Europe want to understand Trump’s “strategic goals,” asking plainly: “What will be the plan?” Poland’s foreign minister, meanwhile, invited Washington to go through formal NATO channels, referencing Article 4 of the founding treaty. Denmark’s foreign minister took a more pragmatic tone, saying Europe should keep an open mind about freedom of navigation even if it didn’t support the decision to go to war, adding: “We must face the world as it is, not as we want it to be.”
The Cost of Standing Apart
The human and economic consequences of the Iran conflict are already spreading well beyond the battlefield. The G7 countries declined to jointly tap their oil reserves to ease costs, even as energy prices soared. Bangladesh closed universities early for the summer; Pakistan and the Philippines both declared four-day work weeks. The UN World Food Programme warned that the 2026 military escalation is driving significant, long-term increases in global food prices.
As many as 3.2 million people in Iran have been displaced by the fighting, according to the UN refugee agency. Israel’s military, meanwhile, says the war will last at least three more weeks — a timeline that has already shifted multiple times.
Diplomacy Isn’t Dead — But It’s Limping
Even as the bombs continue to fall, there are voices calling for a path back from the brink. Some bipartisan US lawmakers have called for renewed diplomatic engagement, emphasizing the risks of miscalculation and arguing that sustained diplomatic efforts offer the best path forward.
Denmark’s foreign minister said Europe must decide on a plan “with a view towards de-escalation,” and Australia and New Zealand have jointly called for the conflict to end as quickly as possible and move toward a negotiated solution.
The Iran conflict has exposed something uncomfortable at the heart of modern US foreign policy: allies are expected to follow America’s lead, but are no longer guaranteed a seat at the table when the decisions are made. Europe is not willing to be handed a war and a bill simultaneously. For now, the fractures in the Western alliance may prove to be one of the most lasting consequences of a conflict that is still far from over.
