VIENNA — Iran has cut its stock of uranium that is closest to atomic weapons-grade, the head of the United Nation’s nuclear watchdog said Sunday.
Under an interim deal with six world powers, Iran is to dilute half of its 20-percent-enriched uranium to a lower grade suitable for use as reactor fuel. Yukiya Amano told the International Atomic Energy Agency’s 35-nation board Monday that that process “has reached the halfway mark.”
The other half of the uranium is to be changed into a form that is relatively difficult to reconvert to 20 percent.
“The measures implemented by Iran, and the further commitments it has undertaken, represent a positive step forward, but much remains to be done to resolve all outstanding issues,” he said, according to a transcript of his speech.
Uranium enriched to 20 percent is only a technical step away from the 90-percent level needed for weapons.
Tehran denies wanting nuclear arms but has agreed to temporarily curb atomic work in exchange for sanctions relief as the sides work on a fuller deal.
Times of Israel staff contributed to this report.