Iran-US Oman Talks Round 4: Why the Format Matters More Than the MOU

# Iran-US Oman Talks Round 4: Why the Format Matters More Than the MOU

> **Quick answer:** The fourth round of Iran-US nuclear talks in Oman on May 11, 2026, ended with both sides calling the discussions "difficult but constructive" and agreeing to continue. The deeper story is not the disputed MOU text — it is the Oman format itself, which uses indirect shuttle diplomacy to give Tehran and Washington face-saving room that a direct exchange would destroy. Core sticking points include the duration of an enrichment moratorium (5 vs. 20 years), Hormuz sovereignty, and sanctions sequencing.

The fourth round of Iran-US talks in Oman is generating more heat than any MOU text ever could. On May 11, 2026, Iran's Foreign Minister Abbas Araghchi and U.S. Mideast envoy Steve Witkoff sat in separate rooms in Muscat while Omani Foreign Minister Badr al-Busaidi shuttled between them. What they produced was not a deal — but that may actually be the point. Understanding why this indirect format is being preserved, and what it is protecting, tells you more about where oil prices and sanctions regimes are heading than reading any 14-point memorandum.

## What Happened in Round 4 — The Facts on the Ground

The fourth round lasted approximately three hours in Muscat, Oman's capital, on May 11, 2026. Both sides characterized the outcome identically: difficult, but useful. No formal agreement was announced, but officials confirmed future talks would occur "in the near future."

The talks took place against a compressed timeline. Trump set a theoretical two-month deadline from his March letter to Iran's Supreme Leader Khamenei. They also preceded Trump's scheduled Middle East trip, which placed implicit pressure on both delegations to show movement without locking in commitments.