Switzerland on Thursday halted all new arms export licences to the United States, citing its constitutional neutrality. No licences have been issued since 28 February — the day the war began. Bern simultaneously closed Swiss airspace to US military flights connected to the conflict. The measures go beyond the passive non-participation of states like Germany and France, which declined to join Trump's Hormuz escort coalition but have not blocked US military operations on their own territory or in their own airspace.
Swiss armed neutrality dates to the Congress of Vienna in 1815 and is embedded in the federal constitution. It has not, however, been applied uniformly. In 2022, Bern adopted EU sanctions against Russia following the invasion of Ukraine — a departure that provoked significant domestic opposition and calls across the political spectrum to reassert traditional neutrality standards. The decision to enforce neutrality against the United States while maintaining sanctions on Russia reflects a distinction the Swiss government has not publicly reconciled: the US-Iran war lacks the multilateral framework — UN Security Council resolutions, broad Coalition participation — that gave the Russia response its institutional cover. No UN resolution authorises the strikes on Iran. No Coalition accompanies the American campaign.
The practical impact is bounded but real. Swiss firms supply precision components integrated into larger weapons systems; the licence halt prevents new contracts but does not affect equipment already delivered. The airspace closure carries more immediate operational weight. US military logistics between European installations and Gulf staging areas have routed through Swiss corridors, and rerouting adds flight time and fuel costs to an operation that CSIS has estimated at $900 million per day . At that burn rate, even marginal logistical inefficiencies compound quickly.
Switzerland's action fits a wider pattern of states refusing to enable the campaign. Every country Trump named for Hormuz escort duty declined within 72 hours . The seven-nation statement of 19 March offered rhetorical support for Hormuz freedom of navigation but committed no forces, no timeline, and no specific contributions. Sri Lanka denied a pre-war US request to stage combat aircraft armed with anti-ship missiles on its territory — a request that arrived on 26 February, two days before hostilities, indicating American pre-war planning for operations from non-allied soil. The cumulative picture: the United States is fighting a major war in which no allied nation has committed military forces and neutral states are now actively closing logistical pathways. The last American military campaign to face comparable diplomatic isolation was the 2003 invasion of Iraq — and even then, a nominal Coalition of the willing provided political cover that does not exist here.
