Details of the Security Council session on the Iranian nuclear issue and sanctions

The UN Security Council held a pivotal session today at its headquarters in New York to discuss developments in the Iranian nuclear file , amid international anticipation regarding the fate of the nuclear agreement and the future of sanctions imposed on Tehran. The Council began its session by hearing a comprehensive briefing from the UN Under-Secretary-General for Political and Peacebuilding Affairs, Rosemary DiCarlo, who highlighted the current challenges and opportunities for international diplomacy.

Diplomacy as the only strategic option

In her remarks, DiCarlo stressed that the international community still considers a negotiated settlement the best and only option to ensure the peaceful nature of Iran's nuclear program, in exchange for lifting the economic sanctions that are crippling the Iranian economy. The UN official affirmed that "despite the fundamental and profound differences between the parties involved regarding the implementation of Security Council Resolution 2231 of 2015 and the fate of the Joint Comprehensive Plan of Action (JCPOA), all parties have continued to emphasize the importance of a diplomatic solution," expressing the United Nations' readiness to facilitate communication channels to achieve this goal.

Controversy surrounds the "snapback mechanism" for sanctions

The session addressed a key point of contention concerning the so-called "snapback mechanism." DiCarlo noted that, based on the letter submitted by Germany, France, and the United Kingdom (the three European parties to the agreement) regarding non-compliance under the Joint Comprehensive Plan of Action (JCPOA), and since the Council did not adopt a resolution to continue phasing out sanctions measures within the 30-day timeframe, the previous sanctions were deemed to have been reinstated against Iran as of September 27, 2025.

She drew attention to the sharp division within the Council, with several member states rejecting the validity and effectiveness of the process of reimposing sanctions in this manner, while other members argued that the entire process was marred by procedural and legal flaws, reflecting the complexity of the legal and political landscape surrounding Resolution 2231.

Historical background: The nuclear agreement and Resolution 2231

To understand the depth of the current crisis, one must go back to 2015 when Iran and the P5+1 group signed the Joint Comprehensive Plan of Action (JCPOA), which was endorsed by the Security Council under Resolution 2231. The agreement's primary objective was to place strict limits on Tehran's nuclear program to ensure it could not develop nuclear weapons, in exchange for lifting international sanctions. However, the United States' unilateral withdrawal from the agreement in 2018, and Iran's subsequent reduction of its nuclear commitments, effectively rendered the agreement moribund, turning Security Council sessions into an arena for ongoing political wrangling.

Regional and international influences

This session is of paramount importance given the impact of the Iranian nuclear issue on international peace and security, particularly in the Middle East. The international community fears that the failure of the diplomatic process could lead to a nuclear arms race in the region, further exacerbating geopolitical tensions. Moreover, the continuation or full reimposition of sanctions would have significant economic repercussions not only for Iran but also for global energy markets and regional trade, making reaching a consensus a pressing need for all parties.