whole deal or go back and have you reconfigure some of the previously agreed to segments. >> talk about the politics here. the americans who need to walk away with enough to go to congress and say listen, we nailed them, we need the iranians to go back to their hardliners in tehran to say we got the sanctions lifted and our nuclear program is still moving ahead. it seems in a way this is like a rubix cube and all this is going to come together somehow. >> that's right. currently in iran, the hard liners seem to be held in check by the supreme leader but they're still taking provocative action and they're waiting to pounce on the president and foreign minister if they come back with too many concessions, what they think is beneath the dignity of great nation like iran. same in the united states. the real deadline for these talks is april 14th. that's when the u.s. senate comes back. if there isn't an agreement by