UN atomic watchdog chief Rafael Grossi is set to arrive in Iran on Monday, where he is expected to speak at a conference and meet officials for talks on Tehran’s nuclear programme. The visit comes at a time of heightened regional tensions and with the International Atomic Energy Agency (IAEA) criticising Iran for lack of cooperation on inspections and other outstanding issues. Grossi, head of the IAEA, is expected to deliver a speech at Iran’s first International Conference on Nuclear Science and Technology. The three-day event, which starts on Monday, is being held in Isfahan province, home to the Natanz uranium enrichment plant and where strikes attributed to Israel hit last month.