We will be no worse off, and, indeed, we will be infinitely better off, given the knowledge that we will accumulate over time about their program.

Before the JPOA, inspectors had less frequent access to Iran's nuclear facilities. Today, under the JPOA, it has enabled IAEA inspectors to have daily access.

I think the willingness of other countries to continue to work with us on imposing sanctions... is dependent on their continued belief that we are seeking a negotiated resolution.

we will remain vigilant about that.

Congress' role is central.

This is not about trusting. This is about absolutely verifying all the commitments they make.

Indeed, as we have discussed earlier, one of the most powerful levers we have to make sure that Iran makes good on any commitments it makes under an accord, if one is reached, is precisely the ability of Congress at the--after Iran has…

I think what is most likely to lead to a nuclear arms race in the region is Iran getting a nuclear weapon.

I think we will find that out over the next 2 months.

Any agreement with Iran would require the kind of access, monitoring, and transparency that actually would put Iran in a place that is exceptional.

Any agreement has to eliminate its production of 20 percent fissile material in a permanent fashion.

We agree that R&D has to be a critical component of any agreement.