Iran sought to heighten pressure on western negotiators in Vienna through increasing its use of advanced centrifuges as talks on reviving the 2015 nuclear deal carried on for a third day on Wednesday.
The International Atomic Energy Agency reported on Wednesday that Iran had started the process of enriching uranium to up to 20% purity with one cascade, or cluster, of 166 advanced IR-6 machines at the Fordow fuel enrichment plant, which is about 20 miles north-east of Qom. Those machines are far more efficient than the first-generation IR-1.
The IAEA said it would “increase the frequency of verification activities at the plant and continue consultations with Iran on practical arrangements to facilitate implementation of these activities”.
The Iranian government’s chief spokesman accused Israel of lying to poison the atmosphere in the negotiations.