If Erdogan keeps the S-400, Turkey sanctions Bill will move – US Senate Foreign Relations Committee chairman
"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"
F-35 program on track to replace Turkey, say Pentagon officials
Trump has not yet decided whether to impose congressional sanctions on Turkey for the S-400 purchase
Trump to Erdogan: “We understand each other’s country”
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