Paris criticizes Tehran for announcing new enrichment enhancement, saying it 'must give up' such actions to save nuclear deal

International Atomic Energy Agency says Cornel Feruta's visit is part of its 'ongoing interaction' with Tehran and to monitor compliance with endangered 2015 nuclear pact

International Atomic Energy Agency says looking into reports Tehran began injecting uranium gas into advanced centrifuges in breach of 2015 nuclear pact with world powers

Spokesman says Tehran has ability to go beyond 20% enrichment of uranium, which analysts say is short technical step away from weapons-grade; UN inspectors to monitor program

US secretary of state urges UK, France, Germany to take action after Tehran again curbs its adherence to nuclear deal with pledge to step up research and development

Mark Esper says Trump's 'maximum pressure' campaign aimed at compelling Tehran to negotiate a new deal that would prevent it from having nuclear weapons 'forever'

Tehran to take third step away from 2015 nuclear deal, state-run media reports; President Rouhani calls move 'highly significant'

After setting Friday deadline for an EU solution for skirting US sanctions, Tehran says failure will bring 'significant' new rollback of nuclear limits on centrifuges

European Commission spokesman says Tehran's steps 'undermine' 2015 nuclear deal as European powers seek ways to keep it alive

NY Times exposé reveals extent of Netanyahu-Obama rift on stopping Iranian nukes; PM himself tells paper he'd 'unequivocally' have ordered strike in 2012 if cabinet had backed him