President Donald Trump asked senior advisers last Thursday about potential options for attacking Iran’s main nuclear site, US media report.
The advisers warned him that military action could spark a broader conflict, officials were cited as saying.
It took place a day after the global nuclear watchdog said Iran’s enriched uranium stockpile was 12 times what was permitted under a 2015 nuclear deal.
The landmark accord saw the US and five other world powers give Iran relief from crippling economic sanctions in return for limits on sensitive activities to show it was not developing nuclear weapons.
US President-elect Joe Biden, who will take office on 20 January, has said he will consider rejoining the nuclear deal so long as Iran returns to full compliance and commits to further negotiations.
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Last Wednesday, the International Atomic Energy Agency (IAEA) published a report saying that Iran’s stockpile of low-enriched uranium had reached 2,442.9kg (5,385.6lb) – far above the 202.8kg limit set under the nuclear deal and theoretically enough to produce two nuclear weapons.
Low-enriched uranium – which typically has a 3-5% concentration of uranium-235, the most suitable isotope for nuclear fission – can be used to produce fuel for power plants. Weapons-grade uranium is 90% enriched or more.
The IAEA also said Iran had finished moving a first cascade of advanced centrifuges, which are used to enrich uranium, from an above-ground plant at its Natanz enrichment facility to an underground plant. The nuclear deal says the underground plant cannot be used for advanced centrifuges.
The New York Times reported on Monday night that Mr Trump had discussed how to respond to the IAEA report at a meeting in the Oval Office with top national security advisers, including Vice-President Mike Pence, Secretary of State Mike Pompeo, acting Defence Secretary Christopher Miller and General Mark Milley, the chairman of the US military’s Joint Chiefs of Staff.
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