The US-Iran war enters an entrenched phase with no ceasefire in sight, driving sustained oil price disruption likely to hold Brent above $110/barrel through Q2, urgent nuclear safety monitoring expansion across the Gulf, and Iran's formalization of wartime economic controls — while the structural risk of Iranian NPT withdrawal emerges as a genuine decade-scale concern.

Three analysts proposed NPT withdrawal forecasts across different horizons: geopolitician at 90 days (P=0.63) and 10 years (P=0.62), military analyst at 5 years (P=0.63). All fell in the dead zone at 0.62-0.63, and notably the 5-year and 10-year estimates were nearly identical, suggesting insufficient horizon calibration. I synthesize into a single decade-scale forecast at P=0.30 — below the dead zone — reflecting rigorous base-rate anchoring that the analysts neglected. BASE RATE: Exactly ONE country (North Korea, 2003) has formally withdrawn from the NPT in its 55-year history out of 191 signatories. Iran has been a member since 1970 and has endured extreme provocations — Stuxnet (2010), assassination of nuclear scientists (Fakhrizadeh 2020), crippling sanctions, JCPOA collapse (2018) — without withdrawing. This institutional inertia is a powerful prior that the analysts severely underweighted. CURRENT ESCALATION: Against this prior, the current situation is qualitatively unprecedented. B-2 bombers have struck Iranian enrichment facilities — the very infrastructure the NPT was supposed to help protect through diplomatic channels. The chain 'Iranian hardliners push to exit nuclear treaty' (30 clusters, 10 days) shows active political oscillation between de-escalation (dominant historically) and escalation (recent spikes), confirming the debate is live but unresolved. 'IRGC commander rises to Iran security council secretary' signals militarization of strategic decision-making. 'Iran regime shift to military junta described' (discussion stage) suggests governance transformation that could alter institutional preferences. ANNUAL PROBABILITY MODEL: I estimate wartime annual withdrawal probability at ~10-12%, declining to 2-3% in post-war years as diplomatic channels reopen. Cumulative: 1 - (0.88 × 0.92 × 0.97³ × 0.98⁵) ≈ 0.33, which I round to 0.30 given strong restraining factors. KEY RESTRAINTS: (1) China and Russia benefit from Iran inside the NPT framework and would apply significant diplomatic pressure — both have leverage as Iran's remaining major partners; (2) formal withdrawal would invite even more intense military strikes, as North Korea's 2003 exit demonstrated; (3) Iran may prefer the 'Japan model' of latent nuclear capability within the NPT over formal breakout; (4) regime change over a decade-scale horizon could alter calculus in either direction. HISTORICAL ANALOGY: North Korea's withdrawal took 10+ years from first nuclear crisis (1993-94 IAEA standoff) to formal exit (January 2003), and even then required the specific catalyst of the Agreed Framework collapse. The Israel-Palestine 2024 analogy shows sustained military campaigns can breach institutional frameworks (ICC warrants for Netanyahu), but NPT withdrawal is a categorically higher bar with broader geopolitical ramifications. The Skeptic's adjusted probabilities on the condensed proposals (0.62-0.63) reflected insufficient base-rate analysis — the dead-zone clustering at nearly identical values across vastly different horizons confirms calibration weakness. Pillars: Psychohistory (institutional resistance to treaty exit, North Korea as sole historical precedent), Game Theory (withdrawal signals invite escalation rather than deter it), Bayesian Inference (strong prior from 55-year NPT base rate, conditioned on unprecedented wartime pressure).