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Explainer-How UN sanctions on Iran could be restored
Published by Global Banking & Finance Review®
Posted on April 10, 2025
4 min readLast updated: January 24, 2026
Global Banking & Finance Review®
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Published by Global Banking & Finance Review®
Posted on April 10, 2025
4 min readLast updated: January 24, 2026
The 2015 Iran nuclear deal's expiration could lead to restored UN sanctions. The snapback process allows reimposing sanctions if Iran fails to comply.
By Michelle Nichols
UNITED NATIONS (Reuters) - The United States and Iran are due to hold talks on Saturday on Tehran's nuclear program as Britain, France and Germany consider whether to trigger a restoration of sanctions on Iran at the United Nations before a 2015 nuclear deal expires in October.
This is how they could do that:
WHAT IS THE 2015 IRAN NUCLEAR DEAL?
Many countries have suspected Iran of pursuing nuclear weapons, which Iran denies.
Iran reached a deal in 2015 with Britain, Germany, France, the U.S., Russia and China - known as the Joint Comprehensive Plan of Action - that lifted U.N., U.S. and European sanctions on Tehran in return for restrictions on its nuclear program.
The U.N. Security Council enshrined the deal in a resolution in July 2015.
WHAT IS THE U.S. ROLE IN THE NUCLEAR DEAL?
Calling it "the worst deal ever," U.S. President Donald Trump quit the JCPOA in 2018, in his first term, and restored all U.S. sanctions on Tehran. In response, Iran began moving away from its nuclear-related commitments under the accord.
Indirect talks between Tehran and the administration of Trump's successor, Joe Biden, failed to make any progress.
The 2015 deal said that Iran would treat any reinstatement of sanctions "as grounds to cease performing its commitments under this JCPOA in whole or in part."
Trump in February restored a "maximum pressure" campaign on Iran. He has said he was open to a deal but has also threatened to use military force if Iran did not agree to end its nuclear program.
WHAT IS IRAN DOING?
The U.N. nuclear watchdog - the International Atomic Energy Agency - has said that Iran is "dramatically" accelerating enrichment of uranium to up to 60% purity, close to the roughly 90% weapons-grade level.
Western countries say there is no need to enrich uranium to such a high level for civilian uses and that no other country has done so without producing nuclear bombs. Iran says its nuclear program is peaceful.
WHAT IS SNAPBACK?
Under the 2015 deal, there is a process known as "snapback" that would reimpose U.N. sanctions on Iran.
If the parties cannot resolve accusations of "significant non-performance" by Iran, this process can be triggered at the 15-member United Nations Security Council.
Once initiated, the Security Council must vote within 30 days on a resolution to continue Iran's sanctions relief, requiring nine votes in favor and no vetoes by the United States, Russia, China, Britain or France to pass.
If the resolution isn't adopted, all U.N. sanctions on Iran would be reimposed unless the Security Council takes other action.
WHAT HAS THE U.S. DONE BEFORE AT THE U.N.?
Even though Trump quit the nuclear deal, the U.S. said in August 2020 that it triggered the snapback process, arguing it could do so because the 2015 resolution still named it as a participant.
However, all the remaining parties to the deal - Iran, Germany, France, Britain, Russia and China - told the Security Council they did not recognize the U.S. move. Nearly all the council's members were also opposed and snapback was not formally recognized.
The remaining participants all have the power to trigger the snapback process but in reality, only Germany, France and Britain are interested in doing so.
WHAT IS HAPPENING NOW?
When the 2015 U.N. resolution expires on October 18, the opportunity to trigger the snapback ends. Trump has directed his U.N. ambassador to work with allies to reintroduce sanctions on Iran.
Britain, France and Germany have told the Security Council they are ready to pursue a snapback. They have pushed for a "comprehensive" report from the IAEA on Iran's nuclear activities, which could also strengthen the case for sanctions.
First, accord participants must work through a dispute resolution mechanism outlined in the deal, which Britain, France and Germany triggered in January 2020. Russia disputes this.
In strategizing about a snapback move at the Security Council, Britain, France and Germany are likely to consider that Russia is the council president in September.
WHAT WOULD THE SANCTIONS BE?
If there is a snapback, measures imposed by the Security Council on Iran in six resolutions from 2006 to 2010 would be restored.
These include:
- An arms embargo
- A ban on uranium enrichment and reprocessing
- A ban on launches and other activities with ballistic missiles capable of delivering nuclear weapons as well as ballistic missile technology transfer and technical assistance
- A targeted global asset freeze and travel ban on Iranian individuals and entities
- Authorization for countries to inspect Iran Air Cargo and Islamic Republic of Iran Shipping Line cargoes for banned goods.
(Reporting by Michelle Nichols; Editing by Cynthia Osterman)
The article discusses the potential restoration of UN sanctions on Iran as the 2015 nuclear deal approaches expiration.
Snapback allows reimposing UN sanctions on Iran if it fails to comply with the nuclear deal terms.
The U.S. withdrew in 2018, citing the deal as ineffective in preventing Iran's nuclear ambitions.
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