The F-35 is the biggest Trojan horse but this problem has been getting bigger and bigger over the years. Everything dependent on GPS and even cruise missiles with components from another nation requiring the other nation to agree on the targets ( in general terms ). I’m talking about hugely expensive equipment “owned” but a country, not the other country refusing a new order. Ironically this has also been a similar problem inside the branches of the US Military, aka weapon DRM where the soldiers/technicians can’t even do a basic repair, they have to call “customer support”. The more the time passes the more the old truths make more sense: Never, ever be dependent on somebody else to defend yourself. Who knew the fricking France were right.. ;)