Do these satellite images prove Iran has been secretly developing a nuclear warhead for years? New Photo Evidence investigates the mysterious goings-on at the Taleghan 2 research facility

WATCH: Why Iran rebuilt this secret facility three times Published: 14:00 EST, 13 November 2026 | Updated: 14:05 EST, 13 November 2026 In the latest episode of Photo Evidence, host Catherine Barnwell pores over years of satellite images of Iran's Taleghan 2 military facility, one of the suspected homes of the Islamic Republic's nuclear weapons programme.Taleghan 2 sits inside the vast Parchin military complex, around 20 miles southeast of Tehran. The complex has been repeatedly bombed since 2024.The facility was built in the early 2000s as part of the infamous Amad Plan, Iran's secret programme to develop a nuclear warhead. Tehran has always denied the plan existed.Under Barack Obama's 2015 nuclear deal, Iran agreed to a ban on exactly this kind of weapons research. But that deal has since collapsed, and satellite images taken since 2024 have captured a string of strange developments at Taleghan 2.Israel flattened the building in October 2024. Iran rebuilt it and buried the new bunker under concrete and earth, only for Israel to strike it again in March 2026.Barnwell shows how Iran is rebuilding the facility once again, and speculates on what the Islamic Republic could be hiding inside. In Photo Evidence, Catherine Barnwell pores over years of satellite images of Iran's Taleghan 2, one of the suspected homes of the Islamic Republic's nuclear weapons programme Taleghan 2 sits inside the vast Parchin military complex, around 20 miles southeast of Tehran. The complex has been repeatedly bombed since 2024 Barnwell shows how Iran is rebuilding the facility once again, and speculates on what the Islamic Republic could be hiding inside'Satellite imagery showed Iran beginning repair work at the site,' she explained.'Iran erected a massive tarpaulin canopy over the entire damaged buried structure, completely obscuring the work taking place beneath it from aerial and satellite observation.'Presumably, this is intended to conceal what is happening beneath it, including the potential movement of new testing equipment back into the facility.'One of the biggest questions is whether Iran is replacing the high explosive containment vessel believed to have been destroyed in the March strikes.'In 2018, when Israel's Mossad seized Iran's secret nuclear archive, the documents and photographs recovered included evidence relating directly to Taleghan 2 in 2003.'One of the most significant pieces of equipment documented in the archive was a small cylindrical steel vessel installed inside Taleghan 2 to contain high explosive experiments.'The vessel was used for what are known as cold tests. In these experiments, scientists use conventional explosives to compress uranium proxies, allowing scientists to study the mechanics of a nuclear implosion without triggering a nuclear explosion.'It is the mandatory final step to engineering a functional nuclear warhead.'Not only does Barnwell's research pose troubling questions about Iran's current designs on a nuclear weapon, but it also suggests the Middle Eastern nation was conducting nuclear weapons research despite commitments to the contrary.That same archive revealed that Iran never truly scrapped its programme, with leaders ordering the work split up and hidden in 2003.'The files revealed that Taleghan 2 was never fully abandoned after 2003, and that experiments on nuclear explosives had continued under tighter secrecy throughout the 2000s and 2010s,' Barnwell explained.'Crucially, the archive exposed that in mid 2003, Iranian leadership ordered the programme to be divided rather than destroyed.'They quietly moved the sensitive research into a covert track, dispersing scientists across universities and front organisations so the dual-use data generated at places like Taleghan could keep moving forward under academic cover.'However, in the months leading up to 2024, intelligence declassifications showed that Iran took that expertise off ice, quietly returning to the undeclared Taleghan 2 facility to resume top-secret active explosive research.'Watch the full episode by subscribing to Daily Mail World on YouTube.