I. Introduction

1. On 20 July 2015, the Security Council, in its resolution 2231 (2015), endorsed the Joint Comprehensive Plan of Action concluded by China, France, Germany, the Russian Federation, the United Kingdom of Great Britain and Northern Ireland, the United States of America, the European Union and the Islamic Republic of Iran.

2. At the start of my tenure as Secretary-General, I am encouraged by the continued implementation of the Joint Comprehensive Plan of Action. I hope that ongoing commitments to the Plan can provide an example of the benefits of diplomacy, which leads to the reduction of tensions among States. I encourage all States to act in accordance with and support this historic agreement, and avoid provocative actions and speech.

3. The International Atomic Energy Agency (IAEA) continues to verify and monitor the implementation by the Islamic Republic of Iran of its nuclear-related commitments under the Joint Comprehensive Plan of Action. On 15 January 2017, IAEA announced that it had verified that the Islamic Republic of Iran had removed, within one year from Implementation Day, as required by the Plan, all excess centrifuges and infrastructure from the Fordow Fuel Enrichment Plant and transferred them to storage at the Natanz Fuel Enrichment Plant under IAEA continuous monitoring.

4. In March and June 2017, the Agency issued quarterly reports on its verification and monitoring in the Islamic Republic of Iran in the light of resolution 2231 (2015) (S/2017/234 and S/2017/502). The Agency reported that it has been verifying and monitoring the implementation by the Islamic Republic of Iran of its nuclear-related commitments since Implementation Day and that the Islamic Republic of Iran continues to provisionally apply the Additional Protocol to its Safeguards Agreement, pending its entry into force, and the transparency measures contained in the Joint Comprehensive Plan of Action. The Agency also reported that it continues to verify the non-diversion of declared nuclear material and that its evaluation regarding the absence of undeclared nuclear material and activities for the Islamic Republic of Iran remained ongoing.

5. I welcome the recent recommitment by the participants in the Joint Comprehensive Plan of Action, in Vienna on 25 April 2017, to the full and effective implementation of the Plan. I call upon them to continue to work together in good faith and reciprocity to ensure that all participants benefit from the Plan. In S/2017/515 2/9 17-09630 resolution 2231 (2015), the Security Council called upon all Member States, regional organizations and international organizations to take such actions as may be appropriate to support the implementation of the Plan. It is in the interest of the international community, writ large, that this achievement of multilateral diplomacy endures transitions and implementation challenges, cementing our collective commitment to diplomacy and dialogue.

6. The present report, the third on the implementation of resolution 2231 (2015), provides an assessment of the implementation of the resolution, including findings and recommendations, since the second report of the Secretary-General, issued on 30 December 2016 (S/2016/1136). Consistent with the first and second reports, the focus of the present report is on the provisions set forth in annex B to resolution 2231 (2015), which include restrictions applicable to nuclear-related transfers, ballistic missile-related transfers and arms-related transfers to or from the Islamic Republic of Iran, as well as asset freeze and travel ban provisions.

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