The resilience of Iran’s governing institutions, particularly the Islamic Revolutionary Guard Corps and constitutional succession mechanisms, underpins the near-certain trader consensus against regime collapse by the October 31 deadline. Despite leadership losses from U.S. and Israeli strikes earlier in 2026, ongoing military pressure, nationwide protests tied to economic strain, and factional tensions following Ayatollah Ali Khamenei’s death, the security apparatus has retained cohesion and contained unrest through repression. This aligns with assessments from U.S. officials and analysts that institutional fracture and unified opposition remain absent. Late developments such as elite defections, a decisive internal split, or escalated military action in the final hours could theoretically shift outcomes, though such scenarios lack supporting evidence at present.