Iran and world powers met in Vienna on Tuesday.<br/> <br />They're hoping to hammer in the coming months a final settlement on Tehran's disputed nuclear program.<br/> <br />(SOUNDBITE) (English) IRANIAN DEPUTY FOREIGN MINISTER, ABBAS ARAQCHI, COMING OUT OF OFFICE SURROUNDED BY MEDIA, SAYING:<br/> <br />"We just had a very good beginning. That was all. Thank you."<br/> <br />It's the first round of high-level talks since a breakthrough interim agreement in November.<br/> <br />That deal stopped a decades-long slide towards outright conflict.<br/> <br />But both sides are non committal about the outcome, including the spokesman for European Union Foreign Policy Chief Catherine Ashton, who's overseeing the talks.<br/> <br />(SOUNDBITE) (English) EU FOREIGN POLICY CHIEF CATHERINE ASHTON'S SPOKESMAN, MICHAEL MANN, SAYING:<br/> <br />"It's impossible for me to say now, at this point, what the result would be at the end of this particular round, I'm afraid."<br/> <br />Any deal needs the approval of Iran's Supreme Leader Ayatollah Ali K