Iran’s chief nuclear negotiator on Friday made an unannounced visit to Russia, two days after indirect talks between the Islamic Republic and US ended in Qatar with Washington saying there was “no progress made”. Ali Bagheri met with Russia’s Deputy Foreign Minister Sergei Ryabkov, and its permanent representative to the international organisations in Vienna, Mikhail Ulyanov, Moscow’s mission in the Austrian capital tweeted. Ulyanov, who represents Russia in negotiations on restoring the 2015 Iran nuclear deal, or Joint Comprehensive Plan of Action, said there was a “very professional exchange…