Extensive damage from U.S. and Israeli strikes in 2025 and early 2026 has rendered Iran's main enrichment sites at Natanz, Fordow, and Isfahan largely inoperable, with tunnel entrances backfilled and centrifuges inaccessible or destroyed. Roughly 440 kilograms of 60% enriched uranium remains bottled up in underground storage, and the IAEA has had no verification access to these facilities since mid-2025, confirming the absence of active weaponization or test preparations. A short-lived June 2026 memorandum of understanding collapsed without yielding a final agreement or down-blending, leaving the program in a dormant state amid ongoing diplomatic friction and Israeli warnings of renewed action. A nuclear test before 2027 would require rapid recovery of trapped material and rebuilt infrastructure, developments that current evidence shows no signs of occurring in the remaining months of 2026.