Watchdog says Iran has failed to explain discovery of uranium particles

The flag of Iran waves in front of the the International Centre building with the headquarters of the International Atomic Energy Agency, IAEA, in Vienna, Austria (Florian Schroetter/AP)

Iran has failed to answer questions about the discovery of uranium particles at former undeclared sites in the country, the head of the UN nuclear watchdog said, calling on Tehran to provide information “without further delay”.

Rafael Grossi, the head of the International Atomic Energy Agency, has been pushing Iran for answers on three sites dating back many years where inspections had revealed traces of uranium of man-made origin, suggesting they were once connected to Iran’s nuclear programme.