We don't have that now. Congress is tired of North Korea's attitude of threatening if they don't get their way. A high-level person, if appointed, would be faced with these tasks. I can't speak to what the White House believes. People in Washington are concerned about the role China can play.
China can bring more influence to bear on North Korea.
I don't know. Kim Dae Jung, the ROK president, is interested in starting a regional network of nations, like NATO, to deal with stability in the region. There is none in Northeast Asia. It would include Russia. The fact that the EU has come into KEDO strongly says they are interested in peaceful resolution of Korean peninsula problems.