Diplomats say that Iran has set up new equipment aimed at improving its ability to enrich uranium to higher levels.
They say that the equipment — an extra set of uranium enriching centrifuges — is not yet on line. But the diplomats add that if the centrifuges become operational they will allow Iran to turn out higher enriched uranium with less waste.
The diplomats asked for anonymity Friday in exchange for divulging confidential information.
Iran has been enriching uranium up to near 20 percent since February. While Tehran denies interest in nuclear weapons, that has put it further on the path of being able to produce warhead material.