"The chairman of Iran's atomic energy organization has ordered effective measures, including the use of a specific series of new and advanced centrifuges of different kinds", it says in the statement from Tehran.
The resolution in question was presented last week by the United Kingdom, France, Germany, and the USA to the IAEA board, where 35 countries are seated. The purpose was said to be to pressure Iran to follow international regulations on nuclear energy and cooperate with the IAEA. The text emphasizes that it is of high importance and urgency that Iran lives up to its legal commitments. Furthermore, a "technically credible explanation" is required for the discovery of uranium at two previously unknown locations in the country, as well as a comprehensive report on nuclear energy activities.
The international community has long feared that the arch-conservative Islamic republic is trying to develop nuclear weapons, a complex process that requires enriched uranium. Iran has claimed that its atomic energy program is for civilian use.
When IAEA chief Rafael Grossi visited Tehran last week, the leaders there agreed to limit enrichment to 60 percent. For nuclear weapons, the concentration of uranium-235 (a specific isotope) needs to be increased from the natural 0.7 to 90 percent. For nuclear power, an enrichment of just under 5 percent is sufficient.
Facts: The Iran Agreement and Sanctions
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In 2015, the nuclear energy agreement JCPOA was signed between Iran and the "P5+1" – the five permanent members of the UN Security Council (France, China, the United Kingdom, Russia, and the USA) and Germany.
The aim was to prevent Iran from developing nuclear weapons after decades of global fear of this. JCPOA provided, among other things, insight into Iran's atomic energy program, while this was significantly curtailed, in exchange for mainly lifting international sanctions.
But in 2018, the then US President Donald Trump left the agreement and reinstated tough sanctions against the country, which led to Iran also breaking the agreement.