Snapback mechanism
Nuclear sanctions against Iran back into force
Updated on September 28, 2025 – 03:15 a.m.Reading time: 4 min.
Ten years after the historic nuclear deal with Iran, the deal is in ruins. Berlin wants to continue to negotiate in order to prevent the construction of an atomic bomb diplomatically. How will Tehran react?
Almost ten years after the historical nuclear agreement with Iran, the UN sanctions against the country came back into force after failed negotiations. The deadline for an agreement between Tehran and its negotiating partners Germany, Great Britain and France took place on Sunday night at 2:01 a.m. Central European period.
The criminal measures that are now currently again include a general weapon embargo, a ban on further uranium enrichment as well as numerous sanctions against individuals and organizations for freezing funds. A weapon embargo means a ban to deliver weapons and equipment to the affected country. Iran had announced a harsh reaction in the event of reinstatement of the measures.
Germany had also promoted sanctions
Germany, France and Great Britain activated the so-called Snapback mechanism at the end of August. It served to be able to prove Iran again with previous sanctions if his obligations are not complied with in the context of the 2015 nuclear agreement. In addition to the United States, Russia and China, Europeans are co -signers of the deal, which is considered the milestone of diplomacy.
The contract provided for a limitation of Iranian uranium enrichment to a maximum of 3.67 percent and strict surveillance so that Tehran could not achieve any atomic bomb. In return, sanctions should be canceled.
US President Donald Trump was the contract, which had been negotiated under his predecessor Barack Obama, a thorn in the side. In 2018, Trump unilaterally terminated the agreement. At the same time, he had new and harder sanctions imposed on Iran.
Happed loosening and an economic upswing failed to materialize. Since then, Tehran had increasingly disregarded his duties according to the agreement. In fact, it has not been implemented in fact for years. Tehran has therefore criticized the reintroduction of the sanctions as illegitimate. Negotiations failed.
Europeans warn Iran of escalation, USA promoting negotiations
Germany, Great Britain and France now warned Iran of an escalation of the nuclear dispute. “We emphasize Iran emphasis to refrain from any escalating measures and to stick back to its legally binding security measures,” said the Foreign Minister of Germany, France and the United Kingdom (E3) together at night. “The reintroduction of UN sanctions does not mean the end of diplomacy.”
The United States also promised Iran new negotiations. Foreign Minister Marco Rubio said that President Donald Trump had made it clear that diplomacy was still an option. “An agreement remains the best result for the Iranian people and the world.” In order for this to happen, Iran must accept direct conversations.
A few days ago, Iran’s top leader Ajatollah Ali Chamenei possible negotiations with the United States had cleared a clear cancellation and accused Trump of not wanting to have any real conversations.