Will the Iranian regime fall by March 31?

Analysis

Despite the killing of Khamenei and ongoing strikes, regime collapse by March 31 remains highly unlikely for several reasons: First, Iran's power structure is deliberately decentralized. The IRGC maintains independent authority and ground control, with strong incentives to preserve the system that empowers them. Historical precedent shows authoritarian regimes rarely collapse immediately after leadership decapitation. Second, Trump's projected 4-5 week timeline focuses on military operations, not political transition. Even successful military campaigns require months-to-years for stable regime change. The administration's unclear endgame and mention of potential 'offramps' suggest negotiation rather than total collapse as the likely outcome. Third, the regime retains meaningful support, with loyalists visible in major cities. The Islamic Republic has survived 45+ years of existential threats including the Iran-Iraq War and multiple uprisings. The market at 17.3% appears roughly accurate but may still underestimate regime durability. Complete governmental collapse, transition, and stabilization within 29 days would be historically unprecedented for a state of Iran's size and institutional depth.