Edward Markey actually said...

It is my hope that, during the summit, it will be made clear to the regime that the only goal of our negotiations is denuclearization.

the benefits of their cooperation

I think we need to only give up sanctions directly related to concrete action on those things upon which the sanctions were imposed.

Ten years. So, in addition to nuclear, there are also missile issues, chemical issues, human rights issues, cyberhacking issues.