sanction iran and make sure we could freeze the nuclear program. i think this is a sensible arrangement in the sense that it freezes iran's program for ten to 15 years. obviously, there are trade offs and compromises, but probably the right way for the united states to go. >> as someone who followed the process from the conception in this round of talks, is this better than what was in place before it? >> well, it continues the freezing of iran's program over the last year and a half but better than what came before that. iran was unfettered. it had no constraints on the uranium enrichment program, the plutonium program. what this agreement will do is freeze it for ten years. so i think it's a better situation. i want to say, chris, i think the problemer way for any member of congress or any of us to look at this is what was the alternative here? was using force an alternative?