Turkey will not allow US to learn the secret of the S-400 air defense system purchased from Russia.

Report informs citing the Yeniakit that the Turkish Foreign Ministry responded to the allegation that the S-400 system would be presented for US inspection.

It was stated that Turkish Foreign Minister Mevlüt Çavuşoğlu assured the Russian diplomat that Turkey would not allow US to investigate the S-400 system.

Notably, the installation of the S-400 anti-missile defense system in Turkey will start in October 2019.