**Ongoing diplomatic engagement and the high costs of escalation continue to shape trader views against a U.S. ground invasion of Iran before 2027.** As of late September 2026, the conflict remains a war of attrition centered on intermittent strikes, sanctions pressure, and control of the Strait of Hormuz rather than large-scale ground operations. Recent indirect talks at the UN General Assembly have focused on a phased deal to reopen the strait in exchange for easing the U.S. naval blockade and sanctions, reflecting both sides’ interest in negotiated off-ramps despite mutual threats and unresolved differences. U.S. operations have imposed significant economic and military burdens—including munitions shortages and casualties—while Iran retains asymmetric capabilities and shows no signs of imminent collapse. Historical patterns of U.S. reluctance for major ground commitments in the region, combined with active mediation and the absence of verified preparations for a full-scale invasion, support the current 85.5% implied probability that no such action will occur by the end of 2026.