Iran had "intense and tough" talks on Monday with the six world powers concerned about its nuclear programme, but there was no clear progress towards ending a decade-long dispute which risks sparking a new Middle East war.<br /><br />A spokesman for the head of the delegation talking to Iran held out hope for a result on the second, final day of talks. <br /><br />"We had an intense and tough exchange of views," said European Union foreign policy head Catherine Ashton's spokesman Michael Mann. "We agreed to reflect overnight on each others' positions."<br /><br />Al Jazeera's Robert Forrestier-Walker reports from Moscow.
