Trump revealed this week that he was seeking to strike a new deal with the Iranian regime, after withdrawing from an Obama-era agreement in his first term.

Iran's Supreme Leader Ayatollah Ali Khamenei has shut down Trump's offer for talks on a nuclear deal and said a "bullying government" was being persistent.

The Kremlin, asked on Monday if Russia had held consultations with Iran before or after Tehran responded to a letter from U.S. President Donald Trump urging the country to negotiate a nuclear deal, said Iran formulates its own policy positions.