Korean aircraft contain many US components, from the engine to the AESA radar, etc.
Here South Korea would get an export ban from the USA.
Either we then develop a much smaller KAAN, e.g. KAAN S from 2028/29, with a Delta Canard design and with a single jet. Or we take a Russian fighter jet, e.g. the SU 35S, modified with Turkish software, fire control system & avionics etc.
But then we would definitely be out of NATO, at the moment they still tolerate us, even if we don't dance to their tune.
The second option would be the Pakistani JF17 Thunder, modified with Turkish software, fire control system and avionics etc, but here it would not be an upgrade in the true sense, the JF17 is really a good aircraft for the money, but it is slightly below the performance of an F-16. Block 50+ and against Block 70+ /Block Özgur it would unfortunately be completely inferior.
The JF17 would have no chance against Greece or countries like Saudi Arabia, Israel & Co with their F-16 Block 70 or Eurofighter Block 4, let alone against the F-35.
It would have to be optimized so much that a completely new aircraft could be developed with the money.
We definitely need another single jet fighter between the KAAN and the F-16.
Neither Hürjet nor Kizilelma/Anka 3 as a fighter aircraft can fill this gap.