Ongoing tensions from the 2025-2026 conflict, including U.S. and Israeli strikes on Iranian nuclear facilities, followed by a collapsed June memorandum of understanding on the Strait of Hormuz and nuclear issues, sustain the absence of formal diplomatic relations severed since 1979. As of September 2026, the United States maintains no physical embassy in Iran, relying instead on Switzerland as protecting power, with repeated travel advisories citing security risks and no progress toward normalization or sanctions relief sufficient for embassy operations. Trader consensus at 95.5% for no reopening reflects these structural barriers and unresolved disputes over nuclear limits and regional security. A late-year breakthrough in bilateral talks addressing core demands could theoretically enable limited consular steps, though such an outcome remains constrained by the current stalemate and short timeline.