The Telegraph reported in a new article, citing satellite imagery, that the Iranian regime has moved to block three tunnel entrances at the Isfahan nuclear complex. According to the report, these entrances have been sealed using a combination of compacted earth berms, protective barriers, and piles of debris—an action that appears aimed at increasing the security level and reducing the vulnerability of the facility.
The “Institute for Science and International Security” also reviewed the same images and confirmed that construction of these barriers likely began on March 18 or shortly thereafter. The institute, which specializes in monitoring developments related to nuclear programs, emphasized that the speed of these measures indicates growing security concerns surrounding the site.
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According to military analysts, such measures are usually assessed within the framework of passive defense strategies. Blocking tunnel entrances can make direct penetration into underground sections more difficult and increase the time required for any offensive operation. These barriers can also place attacking forces in a more vulnerable position, especially when defensive and missile systems are active.
Another part of the Telegraph report states that the Isfahan site is likely one of the key centers for storing highly enriched nuclear material. Estimates indicate that at least half of Iran’s approximately 400-kilogram stockpile of highly enriched uranium is kept at this complex—materials that, if enriched to higher levels, could play a role in the nuclear weapons production cycle.
These developments come as Iran’s nuclear program remains at the center of attention for international bodies and global powers, and any change in its infrastructure is being followed with high sensitivity.
