Snapback Activated: Four Scenarios for Iran’s Response
WANA (Sep 30) – The United Nations issued an official statement declaring that the “snapback mechanism” had been activated, reinstating six previous Security Council sanctions resolutions against Iran. This development marks a new turning point in the nuclear dispute between Iran and the West, placing Tehran before a limited but costly set of options.
In response, Tehran has rejected the legitimacy of the move and repeatedly stated that it will take countermeasures.
Meanwhile, the “Cairo Agreement” between Iran and the International Atomic Energy Agency (IAEA), signed on September 9, 2025, was intended as a middle-ground framework for limited engagement with the Agency. Now, with the activation of the snapback, four practical response scenarios for Tehran appear likely:
People walk past a billboard with a picture of nuclear scientists killed in Israeli strikes and Iranian centrifuges, on a street in Tehran, Iran August 29, 2025. Majid Asgaripour/WANA (West Asia News Agency)
1. Iran withdraws from the Cairo Agreement
One of the first reactions voiced by Iranian officials, political actors, and media was that the reimposition of sanctions renders the Cairo Agreement meaningless. Kazem Gharibabadi, Iran’s Deputy Foreign Minister for Legal and International Affairs, stated: “If the snapback is implemented, the Cairo Agreement will be suspended.”
Similarly, Ali Larijani, Secretary of Iran’s Supreme National Security Council, emphasized that if other countries fail to meet their commitments, returning to previous mechanisms will no longer be possible.
From Tehran’s perspective, the Cairo Agreement was only viable under conditions of eased or suspended international sanctions. The snapback mechanism, in Iran’s view, represents an implicit breach of trust and commitment, pushing Tehran toward exiting the accord.
Two days ago , Iran’s parliament held a closed session on the snapback and the “nullification of the Cairo Agreement.” The parliament’s presidium spokesman explained that the agreement was designed to reduce European pretexts, but with snapback in place, Iran’s cooperation with the IAEA is effectively terminated.
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2. The meaning of exiting the Cairo Agreement: Zero access and inspections in Iran
A formal withdrawal from the Cairo Agreement would nullify the commitments on inspections and facilitation set forth in the deal. This would mean:
- The IAEA would no longer have easy access to Iranian nuclear facilities,
- Routine technical inspections at declared sites would effectively halt,
- Reporting on nuclear materials would be disrupted, undermining continuity of monitoring.
The IAEA had already noted that, following Israeli and U.S. attacks on Iran’s nuclear facilities in June 2025, access to certain sites remained blocked.
The Cairo Agreement had aimed to partially restore inspections and technical cooperation. Exiting the agreement would therefore amount to adopting a “zero-access strategy.”
Cairo Agreement between Iran and IAEA. Social media/ WANA News Agency
3. Iran’s “zero-access” strategy = De facto withdrawal from the NPT without full legal consequences
This is one of the more intriguing analytical dimensions: by adopting a “zero-access” policy, Tehran would effectively step away from the NPT’s inspection regime without formally declaring withdrawal—thus avoiding the full diplomatic and legal repercussions.
Under the Non-Proliferation Treaty (NPT), Iran has oversight obligations under its safeguards agreement with the IAEA. However, under exceptional circumstances, member states can reduce or obstruct cooperation, particularly if they claim national security interests are at stake.
Iran has previously emphasized its commitment to the NPT, but it also passed a new law requiring IAEA inspections to first be approved by the Supreme National Security Council. This gives Tehran leverage to limit or block visits.
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WANA (Sep 20) – With the failure of a UN Security Council resolution to extend sanctions relief for Iran, and mounting pressure from three European powers to trigger the so-called “snapback” mechanism, Tehran has warned that it may withdraw from the Nuclear Non-Proliferation Treaty (NPT) and take further retaliatory measures. The standoff underscores a diplomatic […]
The advantage of not formally withdrawing
A formal withdrawal could trigger new sanctions or UN resolutions, exposing Iran to full allegations of pursuing nuclear weapons.
Official withdrawal would create a “red line” in global and regional opinion that even Iran’s sympathetic partners might not be able to accept.
By adopting a “zero-access” strategy—practical disengagement without official declaration—Iran retains narrative control, shifting the blame for “violating” commitments onto the other side.
In effect, Tehran would move in the shadows: distancing itself from many oversight obligations in practice, while legally portraying itself as an NPT signatory in good standing.
Reports from Iran’s parliament have already suggested that with snapback in force, “Iran is leaving the NPT.” In reality, the “zero-access” approach amounts to de facto withdrawal from the inspection regime without bearing the full weight of legal and political consequences.
People attend a protest against the U.S attack on nuclear sites amid the Iran-Israel conflict, in Tehran, Iran, June 22, 2025. Majid Asgaripour/WANA (West Asia News Agency)
4. Iran suspends negotiations with Europe
Another likely outcome of a strong Iranian response is a complete halt to talks with the three European powers (France, Britain, and Germany).
Possible implications of suspending talks:
1. Failure of European diplomacy: Europe has tried to bring Iran back to the table; cutting off talks deprives them of a key tool for containing regional tensions.
2. Increased international pressure: Europe will likely resort to diplomatic and media campaigns to portray Iran as isolated.
3. Return to heightened confrontation: Without engagement, both sides may escalate rather than de-escalate.
4. Domestic signaling: Ending talks can be presented within Iran as a sign of resistance and adherence to red lines—an important narrative in the Islamic Republic’s discourse.
In other words, cutting off talks with Europe would not be merely symbolic, but part of a broader strategy of shifting the nuclear file back to a field-driven confrontation.
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WANA (Sep 29) – Less than 24 hours after the activation of the snapback mechanism, the European Union announced the reimposition of United Nations sanctions, along with the EU’s own restrictive measures against Iran. According to the statement released today, the restrictions “include travel bans, asset freezes and financial restrictions targeting designated individuals and […]
Gradual escalation rather than immediate rupture
These responses are unlikely to occur overnight. Tehran may escalate pressure step by step to create deterrence.
A complete shutdown of access carries serious security and reputational risks, as the international community may interpret it as a sign of intent to build nuclear weapons.
Regional neighbors, along with Russia, China, and even some Arab states, may step in as mediators or pressure brokers.
With snapback in effect, Iran faces two overarching choices: yield to pressure or commit to full resistance. The critical variables will be Tehran’s messaging, tension management, and cost-control strategies—since this path risks deeper isolation and heightened regional and international confrontation.
The Snapback Mechanism: Sanctions or the Code Name for a Psychological Operation?
WANA (Sep 28) – Activating the snapback mechanism is not just the reinstatement of UN resolutions; it feels more like a warning light being switched on, whose message is being sent into Iran: “pressure, isolation, and crisis.” But the question is whether this move is merely a dormant legal dispute or part of a more […]
