One key sticking point : What would be the limits on Iranian nuclear research ? Another sticking point : When would U.N. sanctions be lifted ? The U.S. and its allies have been trying to get Iran back into compliance with international rules for more than a decade.
One key sticking point : What would be the limits on Iranian nuclear research ? Another sticking point : When would U.N. sanctions be lifted ? Israeli Prime Minister Benjamin Netanyahu warns the deal would be a disaster .