Hardliners in Iran have said no nuclear agreement should be signed unless all sanctions on Iran are lifted. President Hassan Rouhani has said Iran “cannot have sustainable growth when it is isolated.” He has threatened to use his constitutional powers to call a referendum on a potential nuclear deal, in the hopes of achieving an agreement. We’ll talk about how this could impact the possibility of reaching a nuclear deal with Iranian American Nari Safavi. Iranian President Hassan Rouhani said that ongoing nuclear negotiations with world powers are a matter of “heart,” not just centrifuges ahead of talks next week in Geneva. (AP Photo/Vahid Salemi, File