Line Negotiation News Today

Heather: they are optimistic about leaving the summit with toxic going forward. how do you break down optimism with the relationship with north korea going forward? >> reporter: we had two summits that we should understand denuclearize in the peninsula is not straight line negotiation, there will be productive steps forward and setbacks. what the president did today and yesterday was emphasized power points going forward and he made that clear to the north koreans what it is going to take to go ...