“Turkey cannot purchase Russian S-400s and Patriots”: US official
“In the place of the S-400s, we want Turkey to buy an air defense system that is compatible with NATO”
Why Turkish F-35s are a threat to the US & NATO: Analysis
Should the THK operate the F-35 in the vicinity of Russian S-400 missile systems Turkey will receive in 2019, Russian engineers could gain valuable insight into the aircraft’s detectability
F-22 vs. F-35: Which Stealth Fighter Wins in a Shootout?
Both programs cost billions of dollars, but were they money well spent?