You can do a lot without changing the air frame, but every successful aircraft comes to the end of its run eventually. The Russian PAK FA/T-50 is in pre-produc

You can do a lot without changing the air frame, but every successful aircraft comes to the end of its run eventually. The Russian PAK FA/T-50 is in pre-production and should significantly overmatch the F-16, not just with stealth but with supercruise and thrust vectoring.