Key facts
- The UN nuclear watchdog has resolved its outstanding questions in its investigation into past, secret nuclear activities in Syria.
- A separate, quarterly IAEA report on Iran showed no progress.
- Iran's lack of access to verify uranium stocks since June 2025 attacks remains a proliferation concern.
- The IAEA's second investigation into Iran's past nuclear activities, beginning in 2018, is focused on undeclared nuclear materials and activities.
- Iran has not provided credible explanations for the presence of uranium at two undeclared sites: Turquzabad and Varamin.
VIENNA, Sept 1 (Reuters) - The U.N. nuclear watchdog has resolved its outstanding questions in its investigation into past, secret nuclear activities in Syria, according to a confidential report seen by Reuters.
A separate, quarterly International Atomic Energy Agency (IAEA) report on Iran, also obtained by Reuters, indicated there has been no progress in that country's nuclear program. The report highlighted that Iran's lack of access to verify uranium stocks since U.S. and Israeli attacks in June 2025 remains a "proliferation concern."
The IAEA's second investigation into Iran's past nuclear activities, which began in 2018, focuses on evidence suggesting Iran failed to declare all nuclear materials and activities from its pre-2003 nuclear program as required by its safeguards agreement. The agency visited three undeclared locations in 2019 and 2020, and environmental samples from these sites indicated the presence of processed uranium. Iran has yet to provide credible explanations for the uranium detected at two of these sites, Turquzabad and Varamin. The IAEA determined in a November 2025 report that it lost continuity of knowledge over Iran's nuclear materials.