Tehran's statement today says Iran will not negotiate over its right to enrich uranium.
Diplomats say that while the 35 member states plan to discuss Iran's nuclear program, no resolutions are expected to be passed.
Chief Iranian nuclear negotiator Ali Larijani has urged the IAEA to exercise restraint at the meeting.
Last week, Britain, China, France, Germany, Russia, and the United States offered Iran a batch of economic and security incentives to shelve a uranium-enrichment program that could yield fuel for nuclear power plants or, eventually, atomic bombs. If officials in Tehran refuse, some countries are likely to seek UN sanctions against Iran.
Western Deadline
EU High Representative for Common Foreign and Security Policy Javier Solana said today that he expected an Iranian response this week to the offer.
Saudi Arabian Foreign Minister Saud al-Faisal has meanwhile arrived in the Iranian capital Tehran for a one-day visit during which he will have talks with senior Iranian officials. Iran's State news agency, IRNA, reports that al-Faisal is carrying a message for Iran's leaders.
(Reuters)