Russian President Vladimir Putin has told President Trump that he supports the idea of a nuclear deal in which Iran is unable to enrich uranium, according to US officials who spoke to Axios.

However, amid reports saying that the same message has been conveyed to Tehran, Iran's semi-official news agency Tasnim denied it, quoting an "informed source" as saying Putin had not sent any such messages.

Russia has long advocated that Iran should have the right to enrich, so Putin signing off on this 'zero enrichment' US plan marks what could be a significant shift, and much tougher position. Presumably a scheme like this would involve an external power like Russia shipping in the enriched product needed for nuclear energy plants.