US allies refuse to join Iran war as arms bans and airspace closures spread

Overview

Switzerland sold $119 million in arms to the United States last year, making the US its second-largest weapons customer. On March 20, 2026, the Swiss government shut the door on all new orders—and closed its airspace to US military flights tied to the war in Iran. The decision, rooted in Switzerland's 200-year-old tradition of permanent neutrality and its War Materiel Act, formalized a freeze that had been in effect since the conflict began on February 28.

Why it matters

A US war now faces near-unanimous European non-cooperation—a fracture in the Western alliance without modern precedent.

In This Story

3 Videos

5 People

War ends quickly, restrictions lifted, alliance recovers

3 Context

Switzerland bans US military overflights during Iraq War (2003)

Key Indicators

$119M

Swiss arms exports to the US (2025)

Annual value of Swiss weapons sales now frozen by the export ban.

European nations joining US military operation

No European country has agreed to participate in the Iran conflict or the Strait of Hormuz mission.

$126/bbl

Peak Brent crude price

Oil prices surged over 40% from pre-war levels after Iran closed the Strait of Hormuz.

70%

Drop in Strait of Hormuz tanker traffic

Iran's closure of the strait has disrupted roughly one-fifth of the world's oil supply.

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People Involved

Martin Pfister

Announced the arms export ban and airspace restrictions

Kaja Kallas

Leading European diplomatic response to the Iran war

Donald Trump

Directing Iran military campaign amid allied pushback

Priska Seiler Graf

Pushing for broader arms export restrictions

Reto Nause

Warning of reciprocal consequences for Swiss defense

Organizations Involved

Swiss Federal Council

National Executive Government

Issued the arms export ban and airspace restrictions

Switzerland's seven-member collective executive body, which governs by consensus and made the unanimous decision to invoke neutrality law against the US.

European Union

Supranational Political and Economic Union

Refusing military involvement in the Iran conflict

The 27-member bloc whose leaders collectively rejected US demands for military participation in the Iran war and the Strait of Hormuz reopening operation.

Timeline

Switzerland halts all new arms exports to the US
Neutrality

The Swiss Federal Council formally banned all new war materiel export licenses to the United States for the duration of the conflict, citing the War Materiel Act and constitutional neutrality obligations. Existing licenses remain valid.
Today
Seven nations issue joint statement on Hormuz
Diplomacy

The UK, France, Germany, Italy, the Netherlands, Japan, and Canada released a joint statement on the Strait of Hormuz situation without committing to military action.
2 days ago
EU rejects US call to join Strait of Hormuz operation
Diplomacy

European leaders unanimously refused Trump's demand that they contribute military forces to reopen the Strait of Hormuz. Trump called NATO allies 'cowards' and threatened consequences for the alliance.
5 days ago
Switzerland bars US combat-linked military flights
Neutrality

The Swiss Federal Council rejected two US reconnaissance plane overflight requests while approving three non-combat transport flights. Further combat-linked flights would be denied.
7 days ago
Iran closes the Strait of Hormuz
Military

Iran shut down the strait through which roughly 20% of the world's oil supply passes. Tanker traffic dropped approximately 70%, sending oil prices surging.
March 2nd, 2026
Iran retaliates with mass drone and missile strikes
Military

Iran launched hundreds of drones and ballistic missiles at Israel and at US military bases across Bahrain, Jordan, Kuwait, Qatar, Saudi Arabia, Turkey, and the UAE.
March 1st, 2026
US and Israel launch surprise strikes on Iran
Military

Joint US-Israeli airstrikes hit multiple sites across Iran, killing Supreme Leader Khamenei, the defense minister, the IRGC commander, and other top officials. The strikes came during active nuclear negotiations.
February 28th, 2026
Iran says nuclear deal 'within reach'
Diplomacy

Iranian Foreign Minister Abbas Araghchi declared a 'historic' agreement was close ahead of Geneva talks. Oman-mediated negotiations had reported 'substantial progress.'
February 25th, 2026
Swiss Parliament relaxes arms export rules
Policy

Switzerland abolished its ban on re-exporting Swiss weapons, allowing sales to 25 mostly Western countries—including the US—even if they are involved in conflict.
December 1st, 2025
Trump demands Iran dismantle nuclear program
Diplomacy

President Trump sent a letter to Supreme Leader Khamenei demanding full nuclear dismantlement and an end to proxy support, with a two-month deadline. Khamenei rejected the demands as 'excessive and outrageous.'
March 1st, 2025

Scenarios

War ends quickly, restrictions lifted, alliance recovers

Discussed by: Le News, Swiss defence analysts

If the Iran conflict ends within weeks—through a ceasefire, regime change, or negotiated settlement—Switzerland lifts restrictions as it did after the 2003 Iraq War, and arms trade resumes. The broader transatlantic rift heals as the crisis fades. This is the optimistic scenario, but it requires a conflict resolution that currently has no visible path.

Prolonged war triggers US retaliation against Swiss defense procurement

Discussed by: Reto Nause (Centre Party), Breaking Defense, Defense News

A months-long conflict keeps the arms ban in place and the US retaliates by delaying or conditioning delivery of Switzerland's F-35 fighter jets and Patriot missile defense systems. Switzerland accelerates its pivot toward European alternatives like the Eurosam SAMP/T. The rift reshapes Swiss defense procurement away from American equipment for a generation.

More European countries impose arms restrictions on the US

Discussed by: Council on Foreign Relations, Chatham House analysts

Switzerland's decision emboldens other European arms exporters—particularly those already uneasy about the conflict—to restrict weapons sales to the US or Israel. Countries that suspended Israeli arms sales in 2024 (Italy, Netherlands, Belgium, Spain) may extend similar logic to the US. This would represent an unprecedented collective European arms embargo against an American war effort.

Swiss neutrality faces existential domestic debate

Discussed by: SWI swissinfo.ch, Swiss Parliament, ECFR

The whiplash between December 2025's relaxation of arms export rules and March 2026's neutrality-based freeze exposes a deep contradiction in Swiss policy. Parliament's reform was designed to let Switzerland act as a reliable Western arms supplier; the Iran war immediately overrode it. The resulting debate forces Switzerland to choose between deeper integration with European defense structures and strict traditional neutrality.

Historical Context

Switzerland bans US military overflights during Iraq War (2003)

March 2003

What Happened

When the US invaded Iraq without United Nations authorization, the Swiss Federal Council banned coalition military aircraft from Swiss airspace under the same neutrality principles invoked today. Foreign Minister Micheline Calmy-Rey publicly condemned the war and contacted ambassadors of all belligerent nations. However, Switzerland did not halt arms exports to the US—weapons shipments continued throughout the conflict.

Outcome

Short Term

The overflight ban was a diplomatic irritant but did not seriously strain US-Swiss relations, as Switzerland was one of many neutral states opposing the war.

Long Term

The restrictions were lifted after hostilities ended. The decision not to also ban arms exports in 2003 drew criticism as inconsistent, which may have influenced the more comprehensive 2026 response.

Why It's Relevant Today

The 2026 decision mirrors and exceeds the 2003 precedent. Switzerland closed airspace again but added an arms export ban—suggesting the government learned from criticism that banning overflights while allowing weapons sales was contradictory.

Turkey denies US troop transit for Iraq northern front (2003)

March 2003

What Happened

The Turkish parliament voted 264-250 against allowing 62,000 American troops to transit Turkey to open a northern front against Iraq, falling three votes short of the required majority. The US had offered Turkey approximately $6 billion in grants and up to $24 billion in loans. Public opinion was overwhelmingly opposed—roughly 90% of Turks rejected the war.

Outcome

Short Term

The US lost its northern front and had to reroute the 4th Infantry Division to Kuwait, fundamentally altering its invasion plan. Turkey forfeited the massive aid package.

Long Term

The decision poisoned US-Turkish military relations for years. In July 2003, US troops detained and hooded 11 Turkish soldiers in northern Iraq—an incident that became a lasting symbol of the rift.

Why It's Relevant Today

Turkey's refusal shows that even close military allies will block US war logistics when domestic opinion turns decisively against a conflict. The 2026 European refusal is broader and more unanimous than Turkey's narrow three-vote margin.

Sweden-US diplomatic crisis over Vietnam War (1972)

December 1972

What Happened

After President Nixon ordered massive B-52 bombing of Hanoi and Haiphong, Swedish Prime Minister Olof Palme compared the bombings to Nazi atrocities in a radio address, listing 'Guernica, Oradour, Babi Yar, Katyn, Lidice, Sharpeville, and Treblinka' and adding 'Hanoi, Christmas 1972.' The Nixon administration called the comparison a 'gross insult.'

Outcome

Short Term

Washington withdrew its ambassador from Stockholm and told Sweden not to send a replacement. Diplomatic relations were frozen for over a year. The US delayed delivery of Redeye air defense missiles to Sweden.

Long Term

Relations did not fully normalize until 1974. The episode demonstrated that the US can and does impose real costs on smaller nations that publicly oppose its wars—even without formal alliances at stake.

Why It's Relevant Today

The Palme episode is the clearest historical example of a neutral European country suffering concrete US retaliation for opposing an American war. Swiss lawmakers warning about delayed F-35 and Patriot deliveries are drawing on exactly this pattern.