
The US and Europe's top powers on Wednesday expressed alarm at Iran having produced a tiny amount of uranium enriched to 84% purity, very close to weapons grade, and said Iran must explain how it happened.
The UN nuclear watchdog found uranium particles enriched to up to 83.7% at Fordow, a site dug into a mountain and the second place where it is continuously enriching uranium to up to 60%. Weapons grade is around 90%.