Iran Rebuilding Secret Nuclear Site at Parchin Under Cover, Report Claims
Extensive restoration work is underway at Iran's "Talegan 2" nuclear site in Parchin, approximately 30 kilometers south of Tehran, according to a special report by the US-based Institute for Science and International Security (ISIS). The site, which has been targeted twice by Israeli airstrikes in October 2024 and March 2026, is believed to be involved in secret research and development related to nuclear weapons, specifically the "nuclear spark plug" component needed to detonate a warhead. This component requires precise neutron flow, achieved through the detonation of conventional explosives to initiate a nuclear chain reaction, a process notoriously difficult to control.
In 2012, an uncontrolled explosion at the facility caused significant damage, leading Iran to clean the area and remove topsoil, likely to eliminate radioactive residue. The International Atomic Energy Agency (IAEA) detected the blast and sought access, but Iran denied entry, classifying Parchin as a military site outside the IAEA's purview. Following the 2015 nuclear deal, IAEA inspectors were eventually allowed a limited visit, during which soil samples revealed radioactive material. Iran has since denied further access.
Recent satellite imagery from September 13, 2026, shows a large tarp covering the main building above the underground complex, a measure ISIS believes is intended to obstruct satellite surveillance. Heavy engineering equipment and trucks are also visible, suggesting Iran is fortifying the structure to withstand bunker-buster bombs. The report highlights the critical nature of the nuclear spark plug, a component Iran has reportedly not yet mastered.
The ISIS report's release coincides with the upcoming UN General Assembly, where the Iranian nuclear program is expected to be a central topic in US President Donald Trump's address. Iran's delegation, including President Masoud Pezeshkian, is attending, with potential for indirect talks with US officials facilitated by Pakistan and Qatar.
Meanwhile, a separate report suggests Iran has offered a seven-point proposal to the US via Qatar, aiming to end the current conflict. This proposal, presented by Mohsen Rezaei, Secretary of the Supreme National Security Council, includes ending hostilities on all fronts, releasing frozen Iranian assets, lifting the US naval blockade, and redefining maritime navigation rights in the Strait of Hormuz. While the US acceptance is uncertain, the offer may signal a potential shift in Iran's stance due to its worsening economic situation, particularly as it comes from a conservative figure close to the Supreme Leader.
