Russia and Turkey have reached an agreement on Russian S-400 missile systems deliveries to Turkey, the Federal Service for Military-Technical Cooperation said in a statement on Tuesday.
Turkish President Recep Tayyip Erdogan said earlier Tuesday that Ankara had made the first payment for Russian S-400 systems.
"The parties reached agreements on the delivery of the S-400 and signed a contract, Russia is ready to implement it," the statement said.
"The priority right to comment on the contract belongs to the foreign customer. It must be stressed that the delivery of this system to Turkey meets the geopolitical interests of the Russian Federation," the FSMTC said.