And they would do the same with the F-35 if they had been delivered...
S-400
"I will work with my colleagues to ensure there is zero chance that F-35s will leave the US for Turkey while Erdogan possesses the S-400"
Trump has not yet decided whether to impose congressional sanctions on Turkey for the S-400 purchase
Erdogan tried to persuade Trump to continue the process of buying the F-35s, but also to stop the prosecution against the Turkish state-owned Halkbank executive
Letter set out US conditions for resolving crisis over Russian-made missiles ahead of White House meeting, but Turkish president was not convinced, sources say
Erdogan: "Turkey did not ask anyone permission when buying the Russian S-400 missile system nor will not do so if it decides to acquire Russian fighter jets"
And Washington still hopes to persuade its ally to "walk away" from the Russian systems...
Akar rejected criticism that Turkey was drifting away from its Western allies
Turkish media outlets said Graham met Erdogan in New York ahead of the United Nations General Assembly
A US State Department official pointed out that Turkey agreed to never acquire nuclear weapons by signing the non-proliferation treaty