Thomas M. Countryman: “The problem with having a gold standard is it needs to have two things. It needs to be replicable, and it actually needs…”

We cannot allow these weapons usable materials, to be separated from spent nuclear fuel.

China says--and I think it is borne out by their actions--that they do not support North Korea as a nuclear weapons state and that they wish to see the entire Korean Peninsula denuclearized.

It would be grasped by supporters of a nuclear program in Iran and by hardliners in Iran to assert that we were an unreliable interlocutor.

I would like to see this administration and this Congress make a long-term commitment to steadily expanded resources for the International Atomic Energy Agency because, yes, it is that central to U.S. security and to global security.