Iran nuclear programme, war of words steps up ahead of UN report<br /><br />Foreign scientists have helped Iran overcome key hurdles, in it's pursuit of nuclear weapons.<br /><br />That's according to leaked information from a new report, by the International Atomic Energy Agency. <br /><br />The full text, which is due to be released this week has raised international alarm.<br /><br />Al Jazeera's Dorsa Jabbari reports from Tehran.
