Iran’s Nuclear Policy Trajectory: A Four-Phase Evolution

1. Phase I (1968–1979): Iran as a Model Non-Proliferation State

• Iran signed the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) on its opening day in 1968 and ratified it in 1970.
• Under Shah Reza Pahlavi’s White Revolution, Iran actively pursued civilian nuclear energy and gained a reputation for adhering to non-proliferation principles.
• Iran’s nuclear programme remained consistent with peaceful objectives, aligned with NPT obligations.

2. Phase II (1979–2002): Ambiguity Post-Islamic Revolution

• The 1979 Islamic Revolution transformed Iran’s political landscape; Ayatollah Khomeini’s stance on nuclear weapons remained uncertain.
• During the Iran-Iraq War, Iraq''s use of chemical weapons prompted a strategic reassessment in Iran, raising questions about nuclear deterrence.
• Despite accumulating technical capabilities, Iran did not overtly pursue nuclear weaponization.
• Ambiguity over Iran’s nuclear intentions persisted, fostering international suspicion.

3. Phase III (2002–2015): Disclosure, Sanctions, and the JCPOA

• In 2002, the National Council of Resistance of Iran revealed two undeclared nuclear sites in Natanz and Arak, violating NPT transparency requirements.
• Iran’s failure to declare these facilities led to increasing scrutiny by the International Atomic Energy Agency (IAEA).
• Iran’s 2003 Additional Protocol agreement with France, Germany, and the UK to allow expanded inspections failed due to lack of reciprocal diplomatic support.
• In 2006, Iran suspended implementation of the Protocol and the UN Security Council imposed sanctions (2006–2014).
• Under President Mahmoud Ahmadinejad, Iran asserted its right to enrich uranium for civilian purposes despite mounting economic costs.
• Diplomatic engagement resumed under President Hassan Rouhani, leading to the Joint Comprehensive Plan of Action (JCPOA) in 2015.
• Iran agreed to comprehensive restrictions exceeding NPT requirements.
• In return, sanctions were lifted, and Iran briefly regained its status as a compliant state.

4. Phase IV (2018–Present): Collapse of the JCPOA and Renewed Escalation

• In 2018, the U.S. unilaterally withdrew from the JCPOA under President Donald Trump, reimposing sanctions under a “maximum pressure” strategy.
• Iran responded by incrementally breaching JCPOA limits, initially under dispute-resolution clauses.
• By 2022, Iran had enriched uranium close to weapons-grade levels, heightening global concern.
• Recent Israeli airstrikes on Iranian nuclear facilities, supported by the returning Trump administration, have further destabilized the situation.
• European powers have cautioned against unilateral military action, fearing collapse of the global non-proliferation regime.
• Article X of the NPT allows withdrawal under extraordinary circumstances—Israel’s aggression may provide such grounds for Iran.
• Withdrawal could trigger a regional arms race, prompting nations like Saudi Arabia to pursue nuclear capabilities.

Institutional and International Responses

1. IAEA and UN Security Council Perspectives

• The IAEA and the UN Security Council have shifted from cooperative to coercive strategies in response to Iran’s evolving nuclear stance.
• Their actions reflect a broader international divide between proponents of diplomatic engagement and advocates of sanctions or military deterrence.

2. Global Consensus and Divergence

• While major powers differ on strategy, there is a shared consensus: Iran must not acquire nuclear weapons.
• Iran’s new President, Masoud Pezeshkian, has reaffirmed a policy against nuclear armament but insists that Israeli aggression obstructs diplomacy.
• Iran maintains one hand on the nuclear option amid escalating regional tensions.

Current Dynamics and Future Outlook

1. Ongoing Nuclear Advancement

• Iran has made significant technical progress in nuclear enrichment while officially denying weaponization intent.
• International negotiations, including a proposed third-country enrichment facility, have stalled due to Israel’s recent military actions.

2. Risks to the NPT Framework

• The credibility of the NPT is at stake. Should Iran formally exit, the global nuclear order could face unprecedented strain.
• The threat of a nuclear-armed Iran or a pre-emptive war to prevent it looms large, both scenarios antithetical to the NPT’s original purpose.