Bern chose Lockheed Martin's F-35A Lightning II as its next-generation fighter plane in 2021, with a fixed price of around 6 billion Swiss francs ($7.44 billion) for 36 jets, a decision that attracted controversy in Switzerland.

Switzerland and the United States are at odds over the price of 36 US-made F-35 fighter jets, with Washington now seeking a significantly higher payment than originally expected. The Swiss government maintains the aircraft were purchased at a fixed price of some 6 billion Swiss francs ($7.