Iran has refused to accept additional nuclear commitments, senior Iranian officials have confirmed, as US Vice President JD Vance warned that the return of international inspectors could only occur under strict conditions. The development has prompted close monitoring by British diplomats, who are assessing the implications for the Joint Comprehensive Plan of Action (JCPOA).
Tensions escalated this morning after the International Atomic Energy Agency (IAEA) reported that Iran had enriched uranium to 84% purity, just short of weapons-grade. Tehran denies the finding, insisting its programme remains peaceful. A spokesperson for Iran’s foreign ministry said, "There are no new undertakings to be made. We have already fulfilled our obligations under the JCPOA."
Vance, speaking at a defence forum in Munich, stated that the United States would not allow inspectors to return to Iranian sites unless Tehran provided verifiable guarantees. "We have seen a pattern of deception. The return of inspectors is not a precondition for de-escalation; it is a reward for compliance." His remarks signal a hardening of Washington’s stance, complicating European efforts to revive the nuclear deal.
The United Kingdom's Foreign Office issued a terse statement, noting that Britain "remains committed to the diplomatic track" and was "in close contact with IAEA and partners." A senior British official, speaking on condition of anonymity, said London was "acutely aware" of the risks of a further escalation, but stressed that "no options are off the table." The official declined to specify what measures might be considered, though diplomatic sources indicated that enhanced sanctions and increased naval patrols in the Strait of Hormuz were under review.
The IAEA board of governors is expected to meet within the next fortnight to discuss the situation. A Western diplomat in Vienna said the agency's report had "created a firestorm" and that the board would demand immediate clarification from Iran. "The question is whether Tehran will allow emergency inspections, or whether this becomes a full-blown crisis," the diplomat added.
Dominic Raab, the former UK foreign secretary, has called for a "Plan B" to include snapback sanctions under the JCPOA framework. However, current Foreign Office officials caution that such a move could unravel the deal entirely and push Iran towards weaponisation.
Analysts suggest that Iran's refusal to accept new commitments may be a negotiating tactic ahead of potential talks with Washington. Yet the growing enrichment levels suggest a more assertive posture. Dr. Emily Landon, a nuclear non-proliferation expert at King's College London, said, "The 84% figure is likely a bargaining chip, but it is a dangerous one. It indicates that Iran has the knowledge and capability to make a weapon in a matter of weeks if it chooses."
The UK’s Permanent Representative to the IAEA is expected to deliver a robust statement at the next board meeting, echoing Vance’s call for verification. Meanwhile, British warships remain on patrol in the Gulf, prepared for any disruption to shipping lanes.
The coming days will test whether diplomacy can salvage the JCPOA or whether the region edges closer to confrontation. The UK, while not a primary broker, plays a critical role as a bridge between Washington and European capitals. Its measured but vigilant approach reflects the delicate balance required to avoid a conflagration while maintaining pressure on Tehran.
