Longstanding Concerns Over Iran’s Nuclear Ambitions
For more than two decades, Iran’s nuclear and missile programmes have raised significant alarm on the international stage. The United Kingdom has continually championed a diplomatic approach, advocating for resolution through negotiation and dialogue.
In 2006, the United Nations Security Council took a pivotal step by unanimously adopting resolution 1737, aimed at addressing the emerging threat posed by Iran. This resolution instituted sanctions that prohibited the transfer of nuclear technologies and materials, alongside asset freezes on individuals associated with Iran’s enrichment activities.
Fast forward to 2015, the Council endorsed the Joint Comprehensive Plan of Action (JCPOA), which offered relief from comprehensive economic and financial sanctions, contingent upon Iran’s commitment to curtail its nuclear programme. Regrettably, rather than taking this opportunity, Iran has opted for a path of nuclear escalation, expanding its nuclear activities without any credible justification for civilian use.
This expansion includes the accumulation of over 400kg of uranium enriched to 60%, a level of enrichment unique among non-nuclear weapon states. In August 2025, the United Kingdom, France, and Germany formally alerted the Council to Iran’s blatant and intentional non-compliance with the JCPOA. Following this, in September 2025, the Council initiated the snapback process, reinstating UN sanctions.
Iran’s Non-Compliance and Its Implications
One year later, Iran has continually urged other Member States to adhere to the UN Charter, while failing to meet its own obligations and respect the authority of the Council. There are three critical points to consider in this context.
Firstly, the UN Charter mandates the full enforcement of all sanctions resolutions, including the arms embargo. The six Security Council resolutions enacted over the past twenty years are designed to limit Iran’s hazardous proliferation activities, safeguard international security, and uphold the integrity of the global non-proliferation framework. Consequently, all Member States, Iran included, are required to implement these Chapter 7 resolutions without exception. It is essential that the 1737 Committee fulfil its mandate, which includes the prompt appointment of a Committee Chair and the Panel of Experts, as well as support for the forthcoming renewal of the Panel’s mandate.
Secondly, Iran has failed to fulfil the obligations it voluntarily accepted under its comprehensive safeguards agreement with the International Atomic Energy Agency (IAEA), in line with its commitments under the Non-Proliferation Treaty (NPT). The Director-General of the IAEA has reported that Iran’s non-cooperation has deteriorated, with access to IAEA inspectors being denied since June 2025, apart from the Bushehr Power Plant. During the timeframe leading to the latest report, the IAEA was not granted access to any of Iran’s nuclear facilities, leaving the status of Iran’s nuclear activities and uranium stockpile unverifiable.
Urgency of Diplomatic Engagement
The IAEA has identified this situation as a proliferation concern, necessitating immediate attention to Iran’s compliance with its NPT safeguards agreement. Furthermore, Iran’s non-implementation of the IAEA additional protocol since 2021 has been noted. In June 2025, the IAEA Board of Governors determined that Iran was non-compliant with its safeguards obligations. For over a year, various nations have urged Iran to restore its compliance, however, to no avail.
Iran’s continued refusal to meet its obligations has left the international community with little choice but to take action. Consequently, the IAEA Board of Governors has resolved that Iran’s non-compliance with its safeguards obligations merits consideration by this Council.
Finally, Iran now stands at a crossroads and has the opportunity to pursue a diplomatic resolution. Addressing the longstanding concerns of the international community regarding its nuclear programme requires Iran to re-engage in negotiations, fully cooperate with the IAEA, and restore transparency regarding its nuclear undertakings, including compliance with safeguards.
The United Kingdom remains poised to respond positively to any credible and verifiable advancements made by Iran. A negotiated settlement represents the sole long-term solution to the challenges posed by Iran’s nuclear ambitions. Our commitment to a sustainable diplomatic resolution that ensures Iran does not develop or acquire a nuclear weapon remains unwavering.