
"In the coming spring, God willing in April 2020, we will be able to start using this system," he told a gathering of his Justice and Development Party (AKP) in Ankara.
Washington has reacted to Turkey's purchase of the S-400, which was delivered this month, by kicking the country off its F-35 fighter jet program.
The US says Russia will be able to glean sensitive technical knowledge about the new fighter if it is operated alongside the S-400.
"You won't give the F-35? Very well, excuse me, but we will take measures in this regard and will turn toward others," Erdogan said.
"No threats or sanctions against Turkey, especially threats to remove (Turkey) from the F-35 project, will prevent Turkey from ensuring its security priorities.
"I hope the US will act with good sense regarding the S-400," he added.












Comment: Pompeo's impotent response: "There could be more sanctions to follow but frankly what we'd really like is for the S-400 not to become operational." Not helping, Pompeo - you're just pushing Turkey further away with your arrogant bullying: