国会研究服务部-伊朗核计划：德黑兰遵守国际义务（英文）-2021.6-26页_1mb

Summary of Iran's Nuclear Program: Tehran's Compliance with International Obligations

Core Content

This report provides an overview of Iran's nuclear program and its compliance with international obligations, particularly under the Nuclear Nonproliferation Treaty (NPT) and the Joint Comprehensive Plan of Action (JCPOA). It outlines the legal framework governing Iran's nuclear activities and highlights key developments and concerns regarding its compliance.

Main Points

• NPT Ratification and Safeguards Agreement:
  Iran ratified the NPT in 1970 and signed a comprehensive safeguards agreement with the IAEA in 1974. This agreement allows the IAEA to monitor and verify that Iran's nuclear activities are peaceful.

• IAEA's Investigation and Concerns:
  In 2002, the IAEA began investigating allegations of clandestine nuclear activities in Iran. By 2006, the agency reported that some activities had violated the safeguards agreement. This led to a series of six U.N. Security Council resolutions (2006–2010), which required Iran to cooperate fully with IAEA investigations, suspend uranium enrichment, and ratify the Additional Protocol.

• Noncompliance with Previous Resolutions:
  Iran did not fully comply with the Security Council resolutions. It signed but did not ratify the Additional Protocol, and continued its uranium enrichment program and heavy-water reactor construction.

• JCPOA Implementation:
  The July 2015 JCPOA was a landmark agreement between Iran and the P5+1 (China, France, Germany, Russia, the United Kingdom, and the United States). It imposed restrictions on Iran's nuclear program, including limits on uranium enrichment, heavy-water production, and the number of centrifuges. The Implementation Day of the JCPOA was January 16, 2016, which terminated the previous Security Council resolutions' requirements.

• Legal Framework:
  The current legal framework for Iran's nuclear program is composed of the NPT and UN Security Council Resolution 2231, which was adopted in July 2015. Resolution 2231 allows the IAEA to monitor and verify Iran's compliance with the JCPOA.

• IAEA Verification and Monitoring:
  The IAEA has been conducting inspections and monitoring under the JCPOA, including access to declared nuclear facilities. However, its ability to investigate undeclared activities is limited, and access to military sites is subject to approval based on the connection to nuclear material.

• Compliance Issues Post-JCPOA:
  Beginning in July 2019, the IAEA reported that some of Iran's nuclear activities were exceeding JCPOA limits, including the number of centrifuges, enriched uranium stockpiles, and enrichment locations. Iran has also engaged in prohibited R&D activities and centrifuge manufacturing.

• Iran's Response to Compliance Concerns:
  Iran has claimed it is not in violation of the JCPOA and has cited Paragraph 26 of the agreement as a justification for reducing its compliance. However, the E3 (France, Germany, and the UK) have stated that Iran is not meeting its commitments and have referred the matter to the JCPOA's dispute resolution mechanism.

• IAEA's Continued Monitoring:
  Despite Iran's claims, the IAEA has continued to monitor and verify Iran's compliance with the JCPOA. In February 2021, Iran informed the IAEA it would stop implementing some voluntary transparency measures, but a temporary bilateral technical understanding was reached to allow the IAEA to continue its verification activities for three months.

• Status of the JCPOA and IAEA Reports:
  As of June 2020, official reports from the IAEA and the U.S. State Department indicated that Iran had fulfilled its JCPOA and Resolution 2231 requirements. However, by July 2019, the IAEA had identified several areas of noncompliance, and the situation has continued to evolve.

Key Information

• Iran's Nuclear Activities:

  • Uranium enrichment via gas centrifuges.
  • Construction of a heavy-water reactor (Arak) which could produce weapons-grade plutonium.
  • Research and development on nuclear materials and technologies.

• JCPOA Restrictions:

  • Limits on uranium enrichment (e.g., enrichment level, stockpile, and number of centrifuges).
  • Restrictions on heavy-water production and reactor design.
  • Export requirements for spent fuel.
  • Implementation of the Additional Protocol and modified Code 3.1.

• IAEA's Role:

  • Conducts inspections and monitoring of declared nuclear facilities.
  • Has limited authority to investigate undeclared nuclear activities.
  • Uses open-source information and intelligence briefings to verify compliance.

• Dispute Resolution Mechanism:

  • The E3 referred the matter to the JCPOA's dispute resolution mechanism in January 2020.
  • The mechanism remains under discussion, with no formal finding of noncompliance yet.

• Recent Developments:

  • Iran stopped implementing some voluntary transparency measures in February 2021.
  • A temporary technical understanding was reached to continue IAEA verification activities for three months.
  • Iran's cooperation with the IAEA has been described as "unchanged" in November 2020.

Conclusion

While Iran has implemented some restrictions under the JCPOA, the IAEA has reported concerns about its continued nuclear activities exceeding agreed limits. The legal framework for monitoring Iran's nuclear program is now based on the NPT and Resolution 2231, and the IAEA continues to verify compliance with these obligations. The situation remains a point of international concern, with ongoing discussions and potential disputes over Iran's adherence to the JCPOA.