"So we're looking forward to the start of a dialogue," Mr. Nackaerts told reporters at the Vienna, Austria, airport. "A dialogue that is overdue since very long."
U.N. nuclear inspection gets under way in Iran →
"But, of course, there's still a lot of work to be done," he said, "so we have planned another trip in the very near future."
U.N. nuclear official: New trip to Iran planned →