The top diplomats of China, EU, France, Germany, Russia and the U.K. have assured Iran that they were willing to salvage a historic nuclear deal abandoned by the U.S.

The deal, known officially as the Joint Comprehensive Plan of Action (JCPOA), was forged under the administration of former President Barack Obama in 2015 and scrapped by his successor, President Donald Trump, in May. With Iran looking to face stricter U.S. sanctions, the foreign ministers of the EU and five other nations who signed the nuclear agreement met Friday in Vienna in an attempt to negotiate a viable framework in the absence of Washington.