We can only try and do.I don't know much about the Turkish aviation industry nor do I know much about Turkish foreign political interaction with other states. Having said that, IMO the Kaan project is faced with these problems
- US could block supply of US engines, crippling production. That is something that could be precipitated by the US view of Turkish actions within and without Turkiye ie if Turkiye pursued policies or actions repugnant to the US.
- Turkiye may not be capable of designing and building an engine suitable for use in the Kaan without considerable input from a foreign OEM able to do just that. Suitability for use in Kaan incorporates a time element (succeeding on a technical level in 2040 or 2050 is not much use). Is it realistic to think that a good engine can be designed, developed, tested and put into production by a Turkish OEM by 2030?
The leaders of technology changing day by day.Noone can see future,2000s not one think China produce 5th Jet