Iran to enrich uranium to 60 per cent, upping ante for nuclear talks The level of enrichment far exceeds the limit placed on Iran by the nuclear deal but falls short of the level needed for nuclear weapons 13 April 2021 • 5:37pm Centrifuges at Iran's Natanz nuclear facility, where officials have announced plans to increase enrichment to 60 per cent Credit: Atomic Energy Organization of Iran Iran said Tuesday it would dramatically increase its uranium enrichment levels in response to an attack on its Natanz nuclear facility, a further breach of its nuclear deal with world powers that ongoing talks are struggling to salvage.