BBC-
Tehran informed the International Atomic Energy Agency (IAEA), and said the process was to develop fuel for a research reactor.
British, French, and German officials said the move could threaten talks to revive the abandoned 2015 nuclear deal.
The US called it an “unfortunate step backward”.
The deal, known formally as the Joint Comprehensive Plan of Action (JCPOA), imposed restrictions on Iran’s nuclear program to make it harder for them to develop nuclear weapons.
In return, the US and European signatories agreed to lift economic sanctions that were in place.
Former President Donald Trump pulled the US out of the deal in 2018 and reinstated sanctions against Iran, after which Tehran began violating many of its restrictions.
Read more :https://www.bbc.com/news/world-middle-east-57744952