**Ongoing diplomatic efforts between the United States and Iran have not produced a comprehensive final agreement capable of securing UN Security Council endorsement by December 31.** The June 2026 Islamabad Memorandum of Understanding outlined a 60-day window—later extended—for negotiating limits on Iran’s nuclear program, sanctions relief, and related issues, with explicit provision for a binding UNSC resolution. That timeline lapsed without resolution amid resumed hostilities, disputes over uranium enrichment levels, the status of the Strait of Hormuz, and sanctions implementation. As of early October 2026, indirect talks continue on the sidelines of the UN General Assembly, but U.S. officials have introduced new demands for meaningful reductions in Iran’s enrichment capacity while Iran links progress to sanctions relief and an end to the naval blockade. Russia and China have aligned with Tehran on related UNSC matters, and no draft resolution appears imminent. These persistent gaps in core positions explain the strong trader consensus against timely endorsement.