(250624) -- VIENNA, June 24, 2025 (Xinhua) -- The International Atomic Energy Agency (IAEA) Director General Rafael Grossi is seen before the opening of an emergency meeting of the IAEA Board of Governors in Vienna, Austria, June 23, 2025. The UN nuclear watchdog announced Monday that Iran's Fordow nuclear site is expected to have very significant underground damage, given the explosive payload utilized and the extreme vibration-sensitive nature of centrifuges. (Photo by Wang Zhou/Xinhua)