My expectation would be that if we can begin discussions soon, shortly after the Iranian elections, we should have a fairly good sense by the end of the year as to whether they are moving in the right direction.
Here at home, we will strengthen our defenses but not succumb to a siege mentality that sacrifices the open society and liberties and values that we cherish as Americans, because great and proud nations don't hunker down and hide behind walls of suspicion and mistrust.