arrived in a heavily armored train, his preferred mode of travel. the two leaders planning to build on their first meeting and their agreement to work toward complete denuclearization of the korean peninsula. michelle kosinski is live in hanoi. michelle, good morning to you. expectations have been lowered dramatically for this second summit. >> reporter: right. i mean the stakes are high as you said, the pressure is high on both the trump administration and on kim jung-un because so little has been done towards actual denuclearization since the last summit in june. so kim jung-un stndoesn't want do much until the u.s. does. and the u.s. doesn't want to give away too much before it knows for certain that kim jung-un is serious about denuclearization. just think about that. u.s. officials have said they are still not sure that he is serious about denuclearization. so what happens then? what could come out of this is