evidence: The IAEA report only speaks about "particles," suggesting that Iran isn’t building a stockpile of uranium enriched above 60% — the level it has been enriching at for some time. [...] Iran’s 2015 nuclear deal limited Tehran’s uranium stockpile to 300 kilograms (661 pounds) and enrichment to 3.67% — enough to fuel a nuclear power plant. The U.S.’ unilateral withdraw from the accord in 2018 set in motion a series of attacks and escalations by Tehran over its program. Iran has been producing uranium enriched to 60% purity — a level for which nonproliferation experts already say Tehran has no civilian use. The IAEA report put Iran’s uranium stockpile as of Feb. 12 at some 3,760 kilogram (8,289 pounds) — an increase of 87.1 kilograms (192 pounds) since its last quarterly report in November. Of that, 87.5 kilograms (192 pounds) is enriched up to 60% purity.