The Debate - Iran-US diplomacy

http://www.youtube.com/watch?v=Ti08rP4WyKI
Since the victory of Iran's Islamic Revolution, relations with the US have been non-existent. In his UN General Assembly speech, US President Barack Obama acknowledged the US has a history of interfering in Iranian affairs and that the path to building trust is a difficult one. Iran says it's open to full relations with all world nations as long as those relations are based on mutual respect and recognition of Iranian rights.
Is Washington going to change its attitude towards Tehran?
Will President Hassan's Rowhani's new government usher in a new era of relations with the US?
Ken O'Keefe in Tehran - "Iran is not the threat, we are."