Russia and Turkey are in an advanced stage of discussion on the delivery of the second S-400 batch, but the agreement has not yet been signed, Dmitry Shugaev, head of Federal Service of Military-Technical Cooperation, said on Aug. 23.
"We are awaiting for the decision of the Turkish partners to sign another option contract", Sputnik cited Shugaev as telling Zvezda TV.
Earlier, the general director of Rosoboronexport, the Russian agency dealing with the import and export of defense-related products and services, stated that Moscow and Ankara had signed a contract for the supply of a second batch of S-400 air defense systems to Turkey.
"We are currently engaged in talks on the financial model for the execution of this contract with our partners", Mikheev told reporters during the Army-2020 forum.
The Turkish defense industry head, İsmail Demir, previously said that Moscow and Ankara had reached an agreement in principle on the supply of the second batch of S-400s.
The two countries signed a loan agreement on the delivery of S-400 systems in December 2017. In 2019, Turkey received several S-400 battalions worth $2.5 billion.US evaluating response to Turkey's purchase of Russian S-400 missile defense systems: Pompeo
Washington has been opposing the agreement and demanded that Turkey ditch the S-400s and purchase U.S. Patriot systems instead. The U.S. also threatened to delay or even cancel the sale of F-35 fighter jets to Turkey and slap sanctions against Ankara, claiming that the Russian systems are incompatible with the NATO standards and pose security concerns.
Both Ankara and Moscow dismissed the allegations and continued negotiations on an additional batch of S-400s.Turkey 'tested Russia’s S-400 air defense systems on US-made planes last year'