rouhani and zarif have both said they have a green light with the negotiations, full authority. but, as you said, there is a time alignment for this. if they can't get sanctions relief, come in from the cold, things will get very difficult brf if i may interrupt, andrea, very interesting in the interview with zarif, he said it's a window, not a gate. in other words he was making it very clear the window of opportunity is small. >> both sides are under an incredible amount of pressure. >> that's right. >> there's also an element of good cop bad cop here. the senate foreign relations committee issued a bipartisan letter to the president saying don't give away the store here. we want diplomacy, negotiations, a verifiable agreement, we recognize the elements, explicit, won't allow iran to inquire nuclear weapons. we want the ability to continue enriching uranium, store it