Earlier, we talked to Dennis Wilder in New York, a former special assistant to US President George W. Bush. He told us about the outlook for the relations between the US and the DPRK.  

DENNIS WILDER INITIATIVE FOR US-CHINA DIALOGUE ON GLOBAL ISSUES, GEORGETOWN UNIV. FORMER SPECIAL ASSISTANT TO US PRESIDENT G.W. BUSH "What you are looking at is 70 years of mistrust. I don't think the talks are off forever. It can come back quiet quikly. North Korea did not come out blasting this morning after President Trump's letter.  I think that is a good sign. I think the Chinese can play a bigger role now. You need to get concessions in order to get concessions."