collapse. you want to knock out iran's nuclear weapons program peacefully? keep up the sanctions and go for the full deal. nothing short of it. no partial deals, no enrichment. >> we spoke in march of 2012, you and i. you said the crippling sanctions affected their economy, but not the nuclear program. fast forward to now. you argue passionately that they need all their enrichment capability thrown away. you met with the president on monday and made a statement about all the enrichment on tuesday. on monday in the oval office did the president agree there would be no nuclear enrichment in iran, that that's the position of the united states? >> we agree we need meaningful actions. it's an interesting question. this is an intellectual exchange. i don't mean a high falutin' level. it's a real ex change where people are seeking the same