with the united states. in iran, they knew that things really wouldn t resolve themselves unless you make things okay with the world s biggest super power. iran has been america s biggest enemy for so long they could now any about embarking on a new chapter with the united states. they have common enemies in the region. but we also have to see how that plays out. people in iran the powerful they don t know how it s going to affect their future. they re going to have a big say in this over the course of the months and years. joe? all right, ali route en in tehran. it will be interesting seeing the reaction from iran. they ve been living a much more isolated existence for years. let s go back to andrea mitchell with details. on the sanctions part of this obviously a lot of people on capitol hill and across washington. what can you tell us?