Iran's supreme leadership transitioned in March 2026 following the death of Ayatollah Ali Khamenei, with Mojtaba Khamenei installed as successor amid wartime conditions. As of September 2026, trader focus centers on whether ongoing military exchanges with U.S. forces, including strikes on regional targets and reported explosions near the Strait of Hormuz, could trigger further instability or succession questions. President Masoud Pezeshkian and Foreign Minister Abbas Araghchi continue diplomatic outreach at the UN General Assembly while talks on ending Gulf hostilities remain stalled. Internal security incidents, including clashes killing Iranian forces, add pressure on regime cohesion. Scheduled multilateral meetings and any escalation in proxy fronts represent the primary near-term catalysts that could shift probabilities on additional leadership transitions.