The key European powers—France, Germany, and the United Kingdom, known as the E3—have informed the United Nations that they are prepared to reinstate sanctions on Iran if it does not resume nuclear negotiations by the end of August.
This move involves activating the “snapback” mechanism within the 2015 Joint Comprehensive Plan of Action (JCPOA), which allows UN sanctions lifted under the agreement to be automatically reinstated.
In a letter to UN Secretary-General António Guterres and the Security Council, the E3 ministers stated they are ready to trigger snapback unless Iran returns to talks or agrees to an extension. This warning comes after Israeli and U.S. airstrikes on Iranian nuclear sites in June heightened regional tensions and disrupted energy markets.
The snapback clause was designed as a safeguard in the JCPOA so sanctions can be swiftly reimposed if Iran breaches its commitments. Unlike typical Security Council decisions, it cannot be vetoed. The mechanism is available until October 2025, adding urgency to the E3’s deadline.
The EU has warned that without sufficient progress on Iran’s nuclear limitations, sanctions will be reinstated from August 29. If none of the JCPOA parties—including Russia, China, or an E3 member—activate snapback, sanctions due to expire on October 18 will lapse.
Iranian officials have indicated that renewed sanctions might prompt withdrawal from the Nuclear Non-Proliferation Treaty, raising serious security concerns.
While Iran is open to dialogue provided sanctions are lifted and its civilian nuclear rights recognised, it has refused to halt uranium enrichment. Talks with the U.S. stalled after the June strikes.
Since the U.S. exit from the agreement in 2018, Iran has expanded uranium enrichment to 60% purity, far above the 2015 limit and near weapons-grade. The IAEA has repeatedly flagged these developments, though Iran insists its programme is peaceful.
Reimposing sanctions aims to block Iran’s access to materials vital for its nuclear and missile programmes. Given recent damage to facilities in the strikes, Iran will rely more on external supply chains, which sanctions would impede, increasing diplomatic pressure.