The state intermediary agency would also switch to using local currencies instead of the US dollar in deals with foreign trade partners, it added.

Turkish President Recep Tayyip Erdogan and his Russian counterpart Vladimir Putin, on April, said in Ankara that they had agreed to expedite the delivery of S-400 missile systems. At the time it was said that the delivery could be made between late 2019 and early 2020.

The S-400 system is an advanced Russian missile system designed to detect, track, and destroy planes, drones, or missiles as far as 402 kilometers away. It has previously been sold only to China and India.

Washington has time and again warned Turkey against the consequences of its decision to buy the S-400 missile batteries from Russia, saying the White House could slap Ankara with sanctions over such a purchase.

Turkey is striving to strengthen its air defense capabilities, particularly after the US decided in 2015 to withdraw its Patriot surface-to-air missile system from the Anatolian country’s border with Syria, a move that notably weakened Turkey’s air defense.

Turkey’s relations with its Western allies in NATO have been strained over a range of issues. Erdogan has been critical of the US for supporting Kurdish groups in Syria that he says are responsible for terror attacks inside Turkey. Ankara has also condemned Washington's refusal to hand over Fethullah Gulen, a powerful US-based Turkish opposition figure, whom Ankara accuses of having masterminded the July 2016 coup attempt against the Turkish government.