In a historic assertion of its cherished neutrality, the Swiss Federal Council has suspended all new arms export licences to the United States. Triggered by Washington’s involvement in the escalating conflict with Iran, the decision has sent shockwaves through Switzerland’s defence and technology sectors, prompting fears of de-industrialisation and international retaliation.

The legal mechanism behind the ban is rigid. Under Article 22a of the Federal Act on War Materiel, Switzerland is prohibited from authorising the export of war materiel to any country actively involved in an international armed conflict. Because the Swiss government characterised the recent US-Israeli strikes on Iran—dubbed ‘Operation Epic Fury’ by the Trump administration—as an active international conflict, the ban became a legal inevitability. Furthermore, because Switzerland had already halted definitive arms export licences to Israel and Iran in recent years, the law of neutrality dictates that the United States must be treated with equal restriction.

While existing export licences have been spared for now—authorities deemed them to have “no relevance” to the ongoing war—an interdepartmental expert group has been established to place all current and future exports under extreme scrutiny. According to international law expert Evelyne Schmid, the Swiss government retains the power to suspend or entirely revoke these existing authorisations if the geopolitical circumstances require it.

Corporate exodus: The Rheinmetall dilemma For Switzerland’s defence contractors, the consequences are already manifesting in a rapid corporate exodus. The most high-profile casualty is Rheinmetall, the German arms conglomerate that operates Swiss facilities under the RWM Schweiz (formerly Oerlikon) brand. Frustrated by strict Swiss export laws, Rheinmetall has announced it is relocating portions of its Skyranger self-propelled anti-aircraft system production from Switzerland to Neuss, Germany.

The Skyranger system, highly sought after by European nations desperate to counter drone threats, relies on a 30mm Oerlikon cannon produced in Switzerland. Rheinmetall CEO Armin Papperger has openly questioned the viability of Swiss manufacturing, noting the absurdity of a situation where, if Germany were attacked, it could not receive critical military supplies from its own Swiss-based factories.

The dual-use technology trap It is not just heavy munitions manufacturers that are affected. Switzerland’s sophisticated ecosystem of aerospace and precision component manufacturers is also bracing for impact. The newly formed expert group will meticulously review exports of dual-use goods, specialised military training items, and components affected by Iran sanctions.

Swiss tech firms are already under a global microscope. Electronic components from companies like u-blox and STMicroelectronics were recently identified inside Russian Lancet drones deployed in Ukraine. Although these companies insist they halted sales to Russia following the 2022 invasion and that their commercially available chips are frequently smuggled or repurposed via third countries, the reputational and regulatory pressure on Swiss microelectronics and navigation manufacturers has never been higher. As the expert group tightens the net to ensure no Swiss dual-use technology aids the US war effort in Iran, firms producing sensors, GPS modules, and precision motors could face severe export bottlenecks.

A sector in crisis Economically, the ban threatens a vital revenue stream. The United States was the second-largest buyer of Swiss military exports in 2025, importing roughly $119 million (94.2 million Swiss francs) worth of equipment.

The government’s decision has drawn sharp criticism from industry representatives. Swissmem, the national association for mechanical and electrical engineering industries, condemned the move as a “premature statement of neutrality” that could lock Switzerland out of major global defence supply chains. Reto Nause, a politician from the Centre Party, warned that the United States could retaliate by restricting Switzerland’s access to vital security infrastructure, including delays to the Patriot missile defence system and F-35 fighter jets currently being procured by Bern.

Ironically, in December 2025, the Swiss parliament passed a major revision to the War Materiel Act designed specifically to ease these export restrictions for 25 “safe” countries, including the US, in an effort to stop European nations from shunning Swiss defence companies. However, the outbreak of active warfare in the Middle East has effectively overridden this short-lived liberalisation, proving that when the crucible of war heats up, Switzerland’s constitutional neutrality remains an immovable ceiling