Iran Fortifies Nuclear Facility Against US Attacks

Severity: High (Score: 72.2)

Sources: v.daum.net, www.yna.co.kr

Summary

Iran has reportedly installed physical barriers at the entrances of a suspected underground facility in Isfahan, where it is believed to store enriched uranium close to weapons-grade levels. The Institute for Science and International Security (ISIS) revealed in a report that since March 18, 2026, three tunnel entrances have been obstructed with dirt mounds, fences, and debris to delay potential US military operations. Iran currently possesses approximately 441 kg of 60% enriched uranium, with at least half thought to be hidden in the Isfahan facility. This move follows a US airstrike in June 2025, which destroyed centrifuges at the Fordow facility, after which Iran reportedly relocated key materials to Isfahan. The barriers complicate any ground operations by US forces, necessitating heavy machinery for access. Experts suggest that these defensive measures aim to slow down US operations and increase the risk of exposure to Iranian missile counterattacks. The situation highlights the increasing difficulty of military operations targeting Iran's nuclear capabilities. Key Points: • Iran has fortified entrances to a suspected nuclear facility in Isfahan with physical barriers. • The facility is believed to contain over 220 kg of weapons-grade enriched uranium. • US military operations may be significantly delayed due to these defensive measures.

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