robert einhorn joins me. welcome to "bottom line." thank you for your time today.his information we are hearing today about a possible not a deal, but some sort of agreement by marched when he what should a framework look like? robert: in has to deal with all the critical elements of the deal. it is not going to flesh out all the technical details but all the critical nature issues need to be resolved. the actual deadline is march 31, tuesday, although some of the diplomats may wish to finish earlier. it should not be a foregone conclusion that they will reach a deal. as peter cook reported there is some important issues left unresolved and in any negotiation the last issues can be the hardest to resolve. mark: what is iran's endgame? sanctions relief or an attempt to rejoin the community of nations? robert: the principle is sanctions relief. the sanctions have had a devastating impact on the iranian economy. reasonable iranians understand that the economy cannot get back on the right track unless sanctions are lifted. that is their number one priority. mark: franc

robert einhorn is a nuclear arms expert and senior fellow at the brookings institute. join me next hour. cory: "bloomberg west" will be right back. ♪ cory: the bwest byte is one story that tells us -- is one number that tells us whole lot. spencer silver has it. spencer: 100 million. as the number of users which has stop twitch just announced yesterday it was hacked, so they are still working through the details and have released only a small amount of information, but they have 100 million users and put out a general warning requiring all the love them to change their passwords and sent an additional e-mail warning people who were effected that portions of their credit card number could have been compromised as well as their name -- cory: i've never realized how successful twitch is online. next it has a huge audience, 100 million subscribers and people who are gaming enthusiasts will go and watch people play video games and interact with them. it is a very devoted audience. cory: interesting also because amazon has generally been hacked free. you can get the latest h