World March 18, 2026

UK Says National Security Adviser Did Not Join Final U.S.-Iran Negotiations

Downing Street denies reports that Jonathan Powell attended late-stage talks between Washington and Tehran ahead of strikes

By Jordan Park
UK Says National Security Adviser Did Not Join Final U.S.-Iran Negotiations

A spokesperson for the British prime minister stated that Jonathan Powell, the national security adviser, was not present at final discussions between the United States and Iran that preceded U.S. and Israeli strikes on Tehran. The statement rejects a report that placed Powell at diplomatic meetings in Geneva and reiterates that the negotiations were bilateral and facilitated by Oman.

Key Points

  • UK spokesperson denied that National Security Adviser Jonathan Powell attended final U.S.-Iran negotiations in Geneva; negotiations were described as bilateral between the U.S. and Iran and facilitated by Oman.
  • Downing Street stated no British officials formed part of the negotiations and that the UK supported the diplomatic efforts led by White House envoys Steve Witkoff and Jared Kushner.
  • The U.S. and Israel launched strikes on Iran on February 28, actions that have contributed to a wider conflict in the Middle East with thousands of regional fatalities and 13 U.S. service members killed - developments likely to affect defense and diplomatic engagement sectors.

Britain’s national security adviser, Jonathan Powell, did not take part in the final talks between the United States and Iran that occurred before U.S. and Israeli forces carried out strikes on Iran, a spokesman for Prime Minister Keir Starmer told reporters on Wednesday.

The clarification came after a report said Powell had been inside the ambassadorial residence of Oman in Geneva for those discussions and had assessed Tehran’s offer on its nuclear programme as sufficiently significant to avert a rapid move to war. The Downing Street spokesperson rejected that description.

"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 said, responding to questions about the report.

The spokesman added that no group of British officials participated in the negotiations. He said the United Kingdom had backed the approach taken by the two White House envoys, Steve Witkoff and Jared Kushner, and had supported their efforts to secure a negotiated resolution.

The exchanges in Geneva were described by the spokesperson as being limited to U.S.-Iran engagement with Oman acting as facilitator. That account stands in contrast to the reporting that suggested British presence and judgment about Tehran’s overtures.

On February 28, the United States and Israel carried out strikes on Iran, an action that has since contributed to a broader conflict across the Middle East. The hostilities have resulted in thousands of deaths across the region and the loss of 13 U.S. service members, according to the information cited in the briefing.

The prime minister’s office emphasized its backing for the envoys’ diplomatic efforts while categorically denying any direct British involvement in the final phase of those talks. Beyond reiterating the nature of the negotiations as bilateral and Oman-facilitated, the spokesperson did not provide further detail about the content of the discussions or about any other states’ roles.


What was said:

  • Jonathan Powell was not present at the Geneva talks or in the ambassadorial residence, according to the UK spokesperson.
  • The negotiations were described as bilateral between the U.S. and Iran and facilitated by Oman.
  • The UK supported the diplomatic approach pursued by Steve Witkoff and Jared Kushner but did not participate with a delegation.

Risks

  • Conflicting accounts about who attended the talks create uncertainty over the exact diplomatic footprint in the Geneva meetings - this uncertainty may affect diplomatic credibility and information flows in government relations and international affairs sectors.
  • Ongoing conflict following the February 28 strikes has resulted in substantial casualties and regional escalation, posing risks to defense planning and any sectors exposed to geopolitical instability.
  • Limited public detail on the content of the talks means there is uncertainty around what offers or concessions, if any, were discussed and how that might influence future negotiations or policy responses in diplomatic and security-focused areas.

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