Core Insights - Iran continues to build its stockpile of highly enriched uranium at a rate equivalent to producing approximately one nuclear bomb per month, despite ongoing negotiations for a new nuclear agreement with the United States [1] Summary by Categories Nuclear Enrichment Activities - The International Atomic Energy Agency (IAEA) reported that Iran's stockpile of 60% enriched uranium increased from 274.8 kilograms in early February to 408.6 kilograms, representing an approximate 50% increase [1] - This stockpile is sufficient for the production of about 10 nuclear weapons, up from at least 6 weapons reported previously [1] Conversion Capabilities - U.S. officials indicated that Iran could convert this highly enriched uranium into weapons-grade material (90% fissile material) in less than two weeks [1] Concerns Raised - IAEA Director General Rafael Grossi expressed serious concerns regarding Iran's significant increase in the production and accumulation of highly enriched uranium, noting that Iran is the only non-nuclear weapon state producing such material [1]