Tokyo, June 24: The head of the UN's nuclear agency signalled Wednesday that Iranian nuclear enrichment sites would be visited by his inspectors, a key component in the interim deal between the United States and Iran to reach an end to the war. The comment by International Atomic Energy Agency head Rafael Mariano Grossi was the firmest yet from the United Nations agency, which is viewed as key in determining the status of Iran's nuclear stockpile. Since Israel launched a 12-day war on Iran in 2025, the IAEA has been blocked by Tehran from visiting enrichment sites where the Islamic Republic is believed to store enough highly enriched uranium to potentially build as many as 10 nuclear weapons, should it choose to rush for the bomb.