VIENNA: A Russian diplomat participating in talks to save the Iran nuclear deal said Tuesday’s meeting had been “successful,” though their salvage efforts will take time. “The Joint Commission meeting of JCPOA was successful... The restoration of JCPOA will not happen immediately. It will take some time. How long? Nobody knows,” Mikhail Ulyanov, Russia’s Vienna-based envoy to international organizations, wrote on Twitter, referring to the pact by its acronym. Talks aimed at salvaging the deal between Iran and world powers are taking place in Austria’s capital, with the US joining indirectly for the first time since President Joe Biden’s arrival in the White House. The US withdrew from the pact in 2018.