joining us alan dershowitz. sir, a pleasure to have you here.ank you so much. >> thank you. >> answer that question. have we made a bad deal that makes the world far less safe? >> nobody knows for sure. it's certainly possible that if the deal works and if we can open diplomatic relations with iran and if we can change the nature of the iranian regime, and if we can get them voluntarily without the need for war and sanctions to dismantle a nuclear program, that would be great success. thing is a possibility that may happen. maybe a 10 or 15% possibility. on the other side, there is the heavy risk that they're really conning us, that they're fooling us, that they're just buying time, that this will increase the likelihood that they will be on the verge of getting nuclear weapons and increase the need for warfare. i put that in the 20 to 30% range. so on balance, i think it's a bad deal, not motived by any bad intentions. no motivated by anti-israel attitudes. it's a miscalculation and it's bad negotiating tactics. >> you teach negotiations, don't

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here with us now harvard law professor alan dershowitz the author of his 30th book, 30th.ave you on the show. >> thank you. >> i can't think of a high profile case you don't have your finger presents on. is there one? >> i have been very fortunate i've had the most exciting cases. starting when i was a kid lawyer a. guy calls me and says i tried to kill somebody, he was already dead when i shotle. am i guilty of murder or attempted murder? to cases where i'm representing the president of ukraine, i'm involved with the case of the former prime minister of pack stavenlt i have been very fortunate in my cases. >> i mean i'm looking at the list of cases, it goes, mike the tyson, o.j., what, you have literally represented everybody, what is do you think the theme of the book that you discovered about yourself and your approach to law that perhaps you didn't really think about before in. >> well, in "taking the stand," i described i was a c-minus student, a terrible student. i made it barely through college and i tried to explore what happened and what motivated me and i just lo