Iran and six world powers will probably discuss a potential deal on Tehran's nuclear program on the sidelines of the annual UN General Assembly (UNGA) in September, the state news agency IRNA quoted a senior Iranian negotiator as saying.Negotiations are to resume in Europe next month after Iran agreed with the powers - the United States, France, Germany, Britain, Russia and China - in July to extend the process by four months after they failed to meet a July 20 deadline.
