UN Nuclear Watchdog Detects Construction Activity at Suspect Iranian Site

The International Atomic Energy Agency (IAEA) announced on Thursday that it has detected construction activity at the Parchin site in Iran. IAEA Director General Rafael Grossi stated in an interview with Bloomberg that there are "indications that there is movement around this construction site," but added, "We do not have concrete information about activities that may be occurring there."

Earlier, U.S. President Donald Trump had revealed that the U.S. had identified activity at Parchin, warning, "We may have to hit there. We can't have Iran getting nuclear weapons. It's very simple."

The site at Parchin, believed to be a nuclear facility buried beneath a mountain near the Natanz nuclear complex, has seen a significant increase in construction activity this year, according to a CNN report from Wednesday. Satellite imagery analyzed over the past six years shows a clear rise in construction volume in the last year, with the images provided by the Center for Strategic and International Studies (CSIS).

Parchin, located approximately 225 kilometers south of Tehran, has been a focus for intelligence agencies in recent months due to concerns that Iran may be secretly reviving its nuclear program there. New analysis of satellite photos by CSIS indicates a "clear increase in construction activity" this year at the underground facility, which was likely designed as a secure haven for Iran's nuclear program. Construction work has reportedly shifted from active excavation to internal construction and external reinforcement.

Further work at Parchin has included raising and reinforcing tunnel entrances, paving internal roads, reinforcing access areas, and clearing excavated earth. However, ongoing construction, alongside other factors, suggests the site may not yet be capable of enrichment activities, if that is its intended purpose.