U.S. State official - 'gaps remain' in some areas in Iran nuclear talks
"We assess that we still have a credible chance of reaching a deal that is in the best interest of America's security, as well as the security of our allies," Blinken said in testimony for a U.S. Senate Foreign Relations Committee hearing.
He said international negotiators' goal is to conclude major elements of an agreement by the end of March and to complete technical details by June.
He said talks last week were "serious, useful and businesslike," and added, "We have made progress on some issues but gaps remain on others."
(Reporting by Patricia Zengerle; Editing by Doina Chiacu)