The International Atomic Energy Agency passed a resolution on June 12 censuring Iran for what it called unsatisfactory cooperation with nuclear non-proliferation obligations. The vote carried support from 19 countries, making it one of the most significant international rebukes Iran has faced on its nuclear program in recent memory.
At the heart of the dispute: Iran’s failure to explain how uranium particles ended up at sites it never declared to international inspectors. The country has also taken steps to sanitize those locations, which, in plain English, means cleaning up evidence before the watchdog could examine it properly.
The numbers behind the concern
As of June 13, Iran held roughly 440.9 kg of uranium enriched to 60% U-235. That enrichment level sits uncomfortably close to the 90% threshold considered weapons-grade.
Iran is the only non-nuclear-weapon state party to the Non-Proliferation Treaty that has ever produced uranium at 60% enrichment. No other country in that category has come anywhere near that level. The total estimated Iranian stockpile sits at approximately 9,874.9 kg of enriched uranium across various levels.
