UN nuclear watchdog says US-Iran talks at a ‘very crucial’ stage

Talks between Iran and the United States over Tehran’s rapidly advancing nuclear program are “in a very crucial” stage, the head of the United Nations’ nuclear watchdog said Thursday while on a visit to the Islamic Republic. The comments by Rafael Mariano Grossi of the International Atomic Energy Agency in Tehran included an acknowledgment his agency likely would be key in verifying compliance by Iran should a deal be reached.