An Iranian diplomatic official says Foreign Minister Mohammad Javad Zarif will lead nuclear talks with world powers, taking over from the country’s national security council. Since the election of centrist Hasan Rouhani as president in June, Iran says it is taking a new approach to negotiations with a six-nation group - the five permanent members of the UN Security Council plus Germany. Iranian officials say they’ll abandon the bombastic language used under Rouhani’s predecessor, Mahmoud Ahmadinejad. But they also say Iran will continue its disputed nuclear activities. “The nuclear dossier has been transferred to the Foreign Ministry,” the official said on Tuesday. He spoke anonymously as he wasn’t authorised to speak publicly on the issue. The West says Iran is pursuing weapons technology. Iran says its programme is for peaceful purposes.