Trader consensus on low odds of Iran acquiring a nuclear weapon before 2027 stems primarily from extensive damage to enrichment facilities at Natanz, Fordow, and Isfahan from U.S. and Israeli strikes in 2025 and early 2026, which left substantial 60% enriched uranium stockpiles inaccessible under rubble and halted operations. The IAEA's September 2026 report underscores ongoing lack of inspector access since mid-2025, confirming no verified enrichment activity amid the unresolved conflict and June 2026 memorandum of understanding commitments to maintain the status quo. This military degradation, combined with Iran's NPT obligations and diplomatic pressures, creates substantial technical and timeline barriers to breakout. Realistic shifts could arise from prolonged denial of IAEA verification allowing secret material recovery, escalation triggering renewed weaponization debates among Iranian elites, or successful reconstruction of centrifuges if negotiations collapse.