Recent mediated talks in late September 2026 between U.S. and Iranian officials, conducted separately through Qatar and other intermediaries on the sidelines of the UN General Assembly, represent the primary driver of trader assessments on ceasefire durability. These discussions center on an amended Iranian proposal linking a halt to hostilities, reopening of the Strait of Hormuz, asset unfreezing, and sanctions relief to nuclear concessions, though President Trump has publicly rejected key elements while signaling continued engagement. The June 2026 memorandum of understanding, which aimed to formalize a ceasefire and navigation access, repeatedly fractured amid mutual accusations of violations, strikes on vessels, and proxy activity in Lebanon, leaving the situation dependent on verifiable de-escalation steps and scheduled follow-up diplomacy in the coming days.