Iran on Thursday reaffirmed its right to enrich uranium, saying it was "unshakable", on the eve of key talks with European powers threatening to reimpose nuclear sanctions.

Iran is scheduled to meet Britain, France and Germany in Istanbul on Friday, to discuss its nuclear programme, with Tehran accusing European powers of scuppering a landmark 2015 nuclear deal.

The issue has come into focus in recent weeks, with Iran staunchly defending its right to enrich uranium as part of what it says is a civilian nuclear programme, while the United States wants it to stop.

Washington, United States--Iran's nuclear program is advancing at a "worrisome pace," CIA director William Burns said in an interview broadcast Sunday, following reports Tehran had further enriched uranium. Iran was last known to have enriched uranium up to 60 percent purity, but a recent Bloomberg News report that International Atomic Energy...

On the eve of UN nuclear monitors visit to the country, Iran disclosed that its uranium enrichment capacity has increased to record levels. Its head of the Atomic Energy Organization has said the enrichment capacity has reached more than twice the entire history of this industry.

The International Atomic Energy Agency said in its latest report on Iran's nuclear program that it "estimated that, as of May 15, 2022, Iran's total enriched stockpile was 3,809.3 kilograms. The limit in the 2015 deal was set at 300 kg of a specific compound, the equivalent of 202.8 kg...

An IAEA report, which said Iran's stockpile of highly enriched uranium is in excess of the limit laid down in the 2015 nuclear deal, will be discussed during the IAEA's Board of Governors, scheduled for next week with diplomats preparing to revive the deal.