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UK security adviser was not part of final US-Iran talks, says Starmer’s spokesperson

By Thomson Reuters Mar 18, 2026 | 9:49 AM

LONDON, March 18 (Reuters) – Britain’s national security adviser, Jonathan Powell, was not part of final talks between the United ​States and Iran before the U.S. ‌and Israel launched strikes against Tehran, a spokesperson for Prime Minister Keir Starmer said on Wednesday.

Britain’s Guardian newspaper reported on Tuesday that Powell had ‌attended ​the talks and judged ⁠the offer made by ⁠Tehran on its nuclear programme significant enough to prevent a rush to war.

“These negotiations were bilateral between the U.S. and ​Iran, facilitated by Oman. Jonathan was not present in the talks in Geneva ⁠and was not part ⁠of talks in the residence,” the ​spokesperson told reporters, after being asked about ​the report which said Powell was present ‌in the building at Oman’s ambassadorial residence in Geneva.

“No team of British officials participated in the negotiations. The UK supported the ⁠approach Steve Witkoff and Jared Kushner took and their efforts in pursuit of a negotiated solution,” ⁠the spokesperson ‌said, referring to the two ⁠White House envoys.

The United States and ​Israel ‌launched attacks on Iran on ​February 28, ⁠sparking a conflict that has spread across the Middle East, killing thousands in the region and 13 U.S. service members.

(Reporting by Andrew MacAskill, writing by Elizabeth Piper; Editing by ​Kate Holton)