I think Kaan's airframe, (I said Kaan's airframe, not Kaan!) is needed right now by both EU countries and Japan and even USA. This is the only 5th generation airframe that they can add to their inventory as soon as possible, which is both long-range, multi-role, and affordable.
Don't let them bother us with the engine. Let them give us P&W F119 engines and let's integrate them into Kaan. Then, each country should use the radar, avionics and weapons of its own choosing on this airframe. Let everyone go their own way with peace of mind.