>> right. although i will say that dick costello, the ceo of twiter, was very apt to tell us that this was. he said i feel like i'm witnessing a tectonic shift in the geopolitical landscape, reading @hassanrowhani's tweets. the president saying i'll extend my hand if you unclench your fist both in the 2012 re-election and in the 2008 primary his discussions of willingness to be in conversation with iran prompted a great deal of criticism. >> huge criticism. that first debate april 2007 in orangeburg, south carolina. this was the defining difference between himself and hillary clinton when he was looked at as the newbie who was going up against all these older hands who had been dimts, joe biden among them, now vice president. and so he always said, basically what you said, what's wrong with talking? that was his framework from the