The Institute for Science and International Security (ISIS) dropped a new report on Tuesday, October 6, 2026, saying high-resolution satellite imagery from September and October shows "significant" renewed activity at Minzadayi — a secret nuclear weapons development compound northeast of Tehran that Israel exposed and bombed during the 2026 war.
The imagery, captured by VANTOR Technologies satellites, shows the compound stirring again. Minzadayi was identified by Israel as a covert "nuclear headquarters," partially built underground, where — according to the IDF — a group of Iranian nuclear scientists worked in secret to develop a key component of a nuclear weapons system. Israel struck the site on March 3, 2026, destroying several above-ground buildings and likely underground structures. Seven months later, the activity is back.
The timing is no coincidence — and neither is the pressure. The Trump administration has been choking off Tehran's lifelines for months. The U.S. naval blockade of Iranian ports has held since April 13. In August, the Treasury Department launched "Operation Economic Outcast" to cut the regime's funding for its war effort, missile program, and the IRGC. And on October 1, the administration widened the net, sanctioning Iran's rail and auto sectors and their foreign suppliers. Treasury Secretary Scott Bessent said the move "directly targets Iran's enablers and lays the groundwork for the United States and our partners to drain the regime's revenue once and for all." President Trump also rejected a September 26 Iranian offer to reopen the Strait of Hormuz in exchange for ending the blockade and restarting nuclear talks — a clear signal the pressure isn't coming off until Tehran makes real concessions.
Tehran's side of the story hasn't changed: the regime insists its nuclear program is entirely peaceful and denies it is building weapons — a denial it has repeated through two wars, a blockade, and round after round of sanctions. The IRGC recently dismissed reports about attacks on nuclear facilities as "completely false." But the satellite record keeps telling a different story. On September 17, ISIS reported that Iran is rapidly reconstructing the Taleghan 2 facility at the Parchin military complex — even erecting tarps to hide the work from overhead view — while new passive defenses have been identified at Natanz and Pickaxe Mountain.
The pattern is the point. Strike after strike, sanction after sanction, and Iran keeps rebuilding its nuclear weapons infrastructure in the shadows — which is exactly why the White House says the squeeze stays on until Tehran verifiably abandons enrichment and surrenders its stockpiles. IAEA inspectors remain shut out of the sites that matter most. With Iranian oil exports driven toward zero and the rial collapsing, the administration's bet is simple: sooner or later, Tehran has to choose between its bomb program and its economy.