"The return of Russian technical experts who are in Turkey in connection with the S-400 contract will be carried out in accordance with a previously approved schedule", the defence cooperation agency's spokeswoman, Valeria Reshetnikova, told Sputnik.
Ankara signed a deal with Moscow to purchase its S-400 air-defence systems in 2017 and the first deliveries began in July 2019. The deal sparked a row between Ankara and Washington because Turkey also participated in the US F-35 programme and was waiting for delivery of its fighter jets.
The US says Turkey won't be sent the aircraft unless it backtracks on the S-400 deal with Russia – Washington says the Russian systems are incompatible with shared NATO defences and threaten its F-35s, while Ankara insists that the S-400s will operate independently of NATO defences.
