[WASHINGTONPOST] Secretary of State John F. Kerry said in an interview broadcast Sunday that it would be "impossible" to extend nuclear negotiations with Iran if an agreement on fundamental principles is not reached in the coming weeks.Using more categorical language than he has employed previously, Kerry definitively precluded a third extension to talks with Iran about reducing its ability to make a nuclear bomb or easing sanctions.
In November, when no deal could be struck by a self-imposed deadline, a temporary agreement, which had been in place for a year and had been extended once before, was pushed to late June. Kerry said at the time that the major points of agreement would have to be reached by late March. In an interview with NBC's "Meet the Press," taped Saturday in Munich where he was attending an international security conference, Kerry appeared to close the door on another extension.