European nations and Canada are “pushing away” from the F-35, motivated by a desire for “strategic autonomy” and political friction with the Trump administration
Spain officially canceled its F-35 purchase in August 2025, opting for European-built alternatives. Switzerland is now also reviewing its 36-jet deal after being hit with a “shocking” $1.3 billion price hike and new 39% U.S. tariffs, and recent reports suggest that Portugal has not opted to purchase the U.S. jets
Instead of the F-35, they are increasingly looking to European alternatives, such as the Eurofighter Typhoon and the Future Combat Air System (FCAS).
Canada’s 88-jet deal is also in “limbo,” as PM Mark Carney, angered by Trump’s “51st state” comments and trade disputes, ordered a review of the 72 un-committed jets
Technological and industrial sovereignty are significant reasons why some countries are opting not to purchase the F-35. Some European nations prioritize developing their own defense industries and technological bases. Buying American-made F-35s would make them dependent on US supply chains and could suppress the development of their own next-generation aircraft programs. ...

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[–] Voroxpete@sh.itjust.works 1 points 3 days ago

From your source:

DND spokesperson Kened Sadiku said no such switch existEd on the aircraft, but he did acknowledge that the U.S. was in charge of both software and hardware upgrades for the planes.

Emphasis mine. Countries can produce their own hardware replacements for the F-35; even without domestic manufacturing, we can source parts from any other country that has the F-35. The issue isn't maintenance in the sense of keeping planes flying, it's maintenance in the sense of keeping them relevant. And that's a very real issue, and very real reason to consider shutting down the deal. But to call that a "kill switch" is to stretch the English language to absurdity.