ST. PETERSBURG (Sputnik) - Russia has not received any requests from Iran for delivering its S-400 air defence systems, Russian Deputy Prime Minister Yury Borisov told Sputnik on Friday.

"No," Borisov said when asked whether Moscow had received a relevant request from Iran.

"Let them continue spreading [fake news]," Borisov said when asked to comment on the media speculations.

"Everything goes as it goes," the minister commented on cooperation between Russia and Iran.

In late-May, Bloomberg reported, citing its sources, that Russia had refused to sell Iran its S-400 air defence systems. According to the agency, Russia explained its decision by saying that such a move would escalate tensions in the region.

Commenting on the report, Kremlin spokesman Dmitry Peskov said he did not have information about the alleged refusal.

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The report came as tensions between the US and Iran reached a new level in May, when the US imposed more anti-Iranian sanctions and sent an aircraft carrier strike group, a squadron of B-52 bombers, and Patriot interceptors to the Middle East to grapple with what Washington describes as a threat emanating from Iran.