Kim Jung Un appears to be a radically different North Korean leader. I don't recall the North Korean palace being treated similarly as the White House. The young North Korean leader is receiving diplomats at his residence in a fashion not familiar to the world.
I think Dennis Rodman has been to the palace, but, never any American diplomats. This is a different world. It is moving faster than is traditionally thought of as "advantageous" to a good outcome.
Kim Jong Un is beginning to become a world traveler. Now, he receives an invitation to Russia. The paradigm is quickly changing. Can the rest of the world keep up?