ben, you heard what mark regev just said. give me your response. >> look wolf we believe that this deal clearly meets our bottom lines in preventing iran from obtaining a nuclear weapon. there are very strict limitations on iran's program for the next ten years. they will significantly roll it back take out two-thirds of their centrifuges, convert their reactors. put limits on research and development that they can do and get rid of 98% of their stockpile of enriched uranium. that is by the way, a limitation that extends 15 years under this deal. so we believe that with the very comprehensive inspections and verification regime that we have we will be able to confirm and verify that iran cannot pursue a nuclear weapon. >> you heard mark regev suggest this would be another north korea deal. that didn't exactly work out the way the u.s. wanted 20 years ago. here's the question i guess, is this going to be another north korea deal or is this potentially an opening the door the way nixon did to china? >> this is a very different