The stage looks set in Vienna for a final deal between Iran and six world powers after more than a year of talks aimed at curtailing Tehran’s nuclear programme in exchange for relief from international sanctions.<br /><br /> US Secretary of State John Kerry says progress is being made ahead of a new target date of July 7. His Iranian counterpart, Mohammad Javad Zarif, has gone further, posting a video message on YouTube.<br /><br /> “At this eleventh hour, despite some differences that remain, we have never been closer to a lasting outcome but there is no guarantee,” the Iranian Foreign Minister says in the video.<br /><br /> In another key step, the UN atomic watchdog hopes to swiftly present its findings into past Iranian research suspected of being linked to nuclear weapons development.<br /><br /> “With cooperation from Iran, I think we can issue a report by the end of the year on the assessment of the clarification of the issues related to the possible military dimensions,” International Atomic Energy Agency Director-Ge