>> we don't know. since president trump initiated dialogue with north korea, is an indication that the north hasn't tested ballistic missile and nuclear bombs. north korea might not have stopped production of nuclear materials. we should see. that's why we should talk with north korea. we should make north korea more transparent. >> chung in moon, we appreciate you taking the time to talk to us today, sir. thank you so much. >> thank you. coming up, the south korean president called this a big step forward, as did mr. moon there. what will it yield beyond this photo op? mhm