Overview
- A CNN-based intelligence report says Tehran has recently collapsed tunnel passages and emplaced explosive mines at access points to the Isfahan complex, making entry dangerous and slow.
- The International Atomic Energy Agency estimates about 440 pounds of roughly 60% enriched uranium are stored in the Isfahan tunnels, a quantity that represents more than half of Iran’s highly enriched uranium stockpile.
- U.S. officials say negotiators are close to a framework under which Iran would surrender or destroy that material, but claims of an imminent electronic signing were publicly disputed by Tehran.
- Experts warn that recovering the uranium will require extensive de-mining and excavation that could take months, complicate independent verification, and allow Iran to claim portions are inaccessible; U.S. planners considered a raid in May but judged it too risky.
- If confirmed, the fortifications could delay or reshape implementation of any deal, raise safety and political costs for removal teams, and force protracted technical talks over how to prove the full inventory has been surrendered.