Iran will begin enriching uranium with thousands of advanced centrifuges at its two main nuclear facilities at Fordo and Natanz, the United Nations’ nuclear watchdog said Friday, further raising tensions over Tehran’s program as it enriches at near weapons-grade levels.
The notice from the International Atomic Energy Agency mentioned Iran enriching uranium with new centrifuges to only 5% purity, far lower than the 60% it currently does — likely signaling that it still wants to negotiate with the West and the incoming administration of U.S. President-elect Donald Trump.
However, it remains unclear how Trump will approach Iran once he enters office, particularly as Iran continues to threaten to attack Israel amid Israel’s war on Hamas in the Gaza Strip and just after a ceasefire started with Hezbollah in Lebanon.
Iran’s mission to the United Nations did not immediately respond to a request for comment over the IAEA’s report. Tehran had threatened to rapidly advance its program after the Board of Governors at the IAEA condemned Iran at a meeting in November for failing to cooperate fully with the agency.
In a statement, the IAEA outlined the plans Iran informed it of, which include feeding uranium into multiple cascades of its advanced IR-2M, IR-4 and IR-6 centrifuges.
Cascades are a group of centrifuges that spin uranium gas together to more quickly enrich the uranium. Each of these advanced classes of centrifuges enrich uranium faster than Iran’s baseline IR-1 centrifuges, which have been the workhorse of the country’s atomic program.
The IAEA did not elaborate on how many machines would be in each cascade, but Iran has put around 160 centrifuges into a single cascade in the past.
It’s unclear if Iran has begun feeding the uranium yet into the centrifuges. Tehran so far has been vague about its plans. But starting the enrichment at 5% gives Tehran leverage at negotiations with the West and another way to dial up the pressure if they don’t like what they hear. Weapons-grade levels of enrichment are around 90%.
Since the collapse of Iran’s 2015 nuclear deal with world powers following the United States’ unilateral withdrawal from the accord in 2018, it has pursued nuclear enrichment just below weapons-grade levels. U.S. intelligence agencies and others assess that Iran has yet to begin a weapons program.
Iran, as a signatory to the Treaty on the Non-Proliferation of Nuclear Weapons, has pledged to allow the IAEA to visit its atomic sites to ensure its program is peaceful. Tehran also had agreed to additional oversight from the IAEA as part of the 2015 nuclear deal, which saw sanctions lifted in exchange for drastically limiting its program.
However, for years Iran has curtailed inspectors’ access to sites while also not fully answering questions about other sites where nuclear material has been found in the past after the deal’s collapse.
Iranian officials, including Supreme Leader Ayatollah Ali Khamenei and reformist President Masoud Pezeshkian, had signaled in recent months a willingness to negotiate with the West. But Iran also has launched two large-scale missile attacks on Israel amid the war.
Kazem Gharibabadi, an Iranian diplomat, said in a post on a social media platform that he met with EU diplomat Enrique Mora and criticized Europe as being “self-centered” while having “irresponsible behavior.”
“With regard to the nuclear issue of Iran, Europe has failed to be a serious player due to lack of self-confidence and responsibility,” Gharibabadi wrote.
For his part, Mora described having a “frank discussion” with Gharibabadi and another Iranian diplomat. Those talks included “Iran’s military support to Russia that has to stop, the nuclear issue that needs a diplomatic solution, regional tensions (important to avoid further escalation from all sides) and human rights,” he wrote on X.
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