that's why president moon had been saying complete denuclearization of north korea would take a longer time. we should start with some concrete result. and president trump's visit to the dmz has all kinds of possibility. >> did you know that kim jong-un was going to walk back into south korea with president trump? >> i was surprised. i thought president trump would step into north korean territory. but chairman kim jong-un, came to the southern part of cree. and had dialogue with president trump, in the freedom house.