Iran's Rouhani urges Europe to avoid 'threats or pressure'

The deal, known formally as the Joint Comprehensive Plan of Action (JCPOA), has been hanging by a thread since former US president Donald Trump unilaterally withdrew from it in 2018 and reimposed punishing sanctions on Tehran.

Following Joe Biden's US presidential election victory in November, the US, the European parties to the deal -- France, Germany and Britain -- and Tehran have been trying to salvage the accord.