fordo

Under a 2015 nuclear deal with world powers, Iran was not permitted to enrich uranium above 3.67% purity - the level required for fuel for commercial nuclear power plants - and was not allowed to carry out any enrichment at Fordo for 15 years.

It resumed enrichment at Fordo in 2021 and has amassed enough 60%-enriched uranium to potentially make nine nuclear bombs, according to the IAEA.

Four buildings were also damaged at the Isfahan site, he said, including a uranium conversion plant, and no damage was visible at the underground Fordo enrichment plant.

Grossi said no damage had been seen at Fordo, or at the Khondab heavy water reactor, which is under construction.

Under the nuclear deal, no enrichment was permitted at Fordo for 15 years.