US-Iran diplomacy remains shaped by the February 2026 strikes that killed Supreme Leader Ali Khamenei and wounded his successor, Mojtaba Khamenei, who has not appeared publicly since his March appointment by the Assembly of Experts. President Trump has stated he believes Mojtaba is alive but seriously injured and has signaled openness to a meeting only if it advances a durable agreement ending hostilities, lifting sanctions, and securing stricter nuclear limits. A June memorandum of understanding between Trump and Iranian President Masoud Pezeshkian focused on de-escalation and Strait of Hormuz navigation, yet Mojtaba’s indirect endorsements and Iranian insistence on leverage in talks have not produced direct leader-to-leader contact. Ongoing Qatari mediation, uncertainty over Mojtaba’s health and authority, and the absence of scheduled high-level bilateral summits keep the probability of a verified call or in-person exchange low through the end of 2026.