MSNBC:  Democrats Bernie Sanders and Hillary Clinton sparred Thursday over a timetable for further openings in the relationship with Iran, with Clinton arguing in favor of holding out for more concessions from the country, while Sanders pushed to move forward "as quickly as we can."

The two presidential hopefuls are strong supporters of the Iran nuclear deal - and as secretary of state under President Obama, Clinton oversaw the beginnings of the nuclear talks. But the disagreement onstage at the MSNBC debate in Durham, New Hampshire Thursday highlighted a real difference in how each candidate would manage what comes next >>>