The head of the United Nations nuclear watchdog, Rafael Grossi, has warned that the ongoing impasse with Iran over nuclear inspections cannot last indefinitely. Inspectors have been denied access to three key nuclear sites in Iran that were bombed in June, while all other declared facilities have been inspected. Iran is required to submit a report detailing the status of these sites and the fate of a significant stockpile of highly enriched uranium, but has yet to do so. Grossi emphasized that without this information, there can be no assurance that nuclear material has not been diverted or hidden, urging Iran to engage with inspectors to resolve the situation.