The United States dropped its demand that Iran ship its 440.9 kg of 60 per cent enriched uranium abroad, accepting dilution inside Iran instead, The New York Times reported on 14 June citing two US officials. The remaining gap is duration: 20 years versus roughly 15.
Shifting from ship-out to dilute-in-place puts the verification burden onto the IAEA (International Atomic Energy Agency). Inspectors must confirm dilution is complete at facilities they have been denied access to since June.
