William R. Richardson: “We have to recognize that no fence ever built has stopped history. And a border fence won't either. If you build a…”

This was a concession in the first summit that we got nothing in return. So we should not concede that one again.

But the sanctions that have, I think, bitten--that bite the most have been the coal, the uranium, the oil sanctions that are imposed now by the U.N.

I would not trade an end to the war treaty or unless there is a denuclearization of sizable numbers of dismantling of weapons and WMD and missiles.

We absolutely need them to keep enforcing sanctions or the pressure on North Korea will deteriorate.