The US withholding F-35 from Turkey could give Russia the chance it needs to export SU-57
Above all else, SU-57s would be able to be directly integrated with the S-400 air defense system without caveat
-- Turkish software
-- Turkish mission computer
-- Turkish electronics
-- Turkish IFF system
-- Turkish gan based AESA Radar
-- Turkish SPEWS-II self protection electronic warfare suite
-- Turkish BOZDOGAN and GOKDOGAN air to air missiles
-- Turkish AKBABA anti radiation missile
-- Turkish SOM Cruise Missile ( land attack/ anti ship capability
We prefer Turkish control S400 and SU-57 instead of American control F-35
Nobody can match with Turkish control S400 and SU-57 combination in the region
US plays F-35 card against S-400 deal to ask Turkey for endless concessions
The problems between Turkey and the US are multilayered and very complicated
The S-400 just turned into a filter pushing other problems to the back burner
There are serious confrontation between Turkey and the US in northern Syria ( the US support PKK/YPG terrorists who killed over 40.000 innocent people in Turkey to destroy Turkey's territorial integrity )
and the US uses FETO terrorist organization since 2013 to destroy ERDOGAN and future of Turkish people
Turkey, Russia, Iran agree to use local currencies in trade
there are not economic problems in Turkey
there are economic attacks by the US on Turkish economy