i didn t know what he would say. but it was my honor to do it. reporter: north korea leader, face-to-face interact was second in 4 months with our president. and third overall, his country is still under heavy sanctioned by much of the world including u.s., and president was asked if he thought that could end soon. at some point, i am looking forward to taking them off. i m looking forward, but sanctions remain, yes. but at some point during the negotiation things could happen. that is what we ll talk about sanctions. reporter: before leaving, asia, president headed south of us seoul, on the big airbase there. and addressed members of military, he told troops it was a great honor, to stand in north korea and represent the united states and process, what a time it was. so now president makes his way back to washington, ahead of a 4th of july celebration in