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The United States has officially pulled Oman out of its longstanding mediation role in indirect negotiations with Iran, accusing the Gulf state of behavior that a senior US official described as “duplicitous.” The move, which landed on June 15, 2026, effectively dismantles a diplomatic back-channel that had been operating since at least April 2025.
What happened and why it matters
The accusation from Washington was blunt by diplomatic standards. A senior US official said Oman’s conduct during the mediation process closely mirrored that of “employees of the Iranians.”
Oman had been hosting rounds of indirect talks in its capital, Muscat, involving US Special Envoy Steve Witkoff and Iranian Foreign Minister Abbas Araghchi. Those discussions touched on nuclear negotiations.
The Trump administration had been signaling its dissatisfaction for some time, urging Oman to distance itself from Tehran and threatening sanctions if it didn’t comply.
Oman’s balancing act collapses
The sultanate facilitated secret talks between the US and Iran that helped pave the way for the 2015 nuclear deal under the Obama administration. Tensions between Oman and the US had been building throughout 2026, driven by Washington’s growing conviction that Muscat was coordinating too closely with Iranian counterparts.
The energy and crypto angle
On the digital asset front, the US Treasury has been aggressively targeting Iranian digital asset flows throughout 2025 and 2026, including a $1 billion seizure of Iranian digital assets and sanctions against exchanges like Nobitex. These enforcement actions are separate from the mediation collapse.
For crypto market participants, the practical implication is increased regulatory scrutiny on exchanges that might, even inadvertently, facilitate transactions connected to Iranian entities.
Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.
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