A team of inspectors from the UN nuclear watchdog has arrived in Tehran for what are expected to be key talks about Iran's controversial nuclear program.
Iran's state TV says the International Atomic Energy Agency team arrived early on Monday morning. The report did not give a timetable or agenda for the two-day visit.
This is the second IAEA visit to Tehran in less than a month.
Herman Nackaerts, a senior UN nuclear official, said in Vienna before the team departed on Sunday that he hoped for progress in the talks but his careful choice of words suggested little expectation the meeting will be successful.
The West suspects Iran's nuclear program is geared toward making weapons, a charge Iran denies.