John Kerry actually said...

If we thought it was necessary or indeed helpful to have it, to have these additional sanctions during the pendency of the negotiations, we ...

If they lose that conviction, the United States, not Iran, would be isolated, the sanctions regime would collapse.

The moment they doubt that and lose faith in that, then the economic incentives many of them have not to abide by the sanctions regime may s...

Our goal is to conclude the major elements of the deal by the end of March and then to complete the technical details by June.