Senior officials of the International Atomic Energy Agency (IAEA) and Iran started Monday a two-day meeting in Vienna. The negotiations come shortly before Iran is scheduled to meet with the United States, Britain, France, Germany, Russia and China on May 23 in Baghdad for a new round of wider-ranging talks on building confidence over Tehran's nuclear programme. IAEA Chief Inspector Herman Nackaerts arrived for the talks at the Iranian embassy in the Austrian Capital, according to a report of DPA. Two previous rounds of IAEA-Iran talks ended without result earlier this year. On the Iranian side, Tehran's ambassador at the IAEA, Ali Asghar Soltanieh is attending the new round of talks.