European powers have triggered a formal dispute mechanism over Iran’s breaches of key parts of the 2015 nuclear deal – a move that could spell its end.
Iran has gradually lifted all limits on its production of enriched uranium, which can be used to make reactor fuel but also nuclear weapons.
It has said it is entitled to do so in response to sanctions reinstated by the US when it abandoned the deal in 2018.
France, Germany and the UK said they did not accept Iran’s argument.
The mechanism, set out in article 36 of the deal, involves the dispute being referred to a Joint Commission that will have a minimum of 15 days to resolve the issue.
If the complainants are still not satisfied, they can refer the matter to the UN Security Council, which could vote to reimpose any sanctions lifted under the deal.
