“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
US makes an offer to Turkey for the sale of Patriot missiles
Turkish diplomatic sources say Turkey’s chances to drop S-400s are “zero”