National Security Adviser John Bolton is denying reports that the U.S. would accept if North Korea froze their nuclear program, rather than denuclearizing completely. This comes after President Trump made a surprise historic visit to the country Saturday. Gordon Chang, author of “Nuclear Showdown: North Korea Take on the World,” and Daniel Lippman, co-author of Politico Playbook and Politico reporter, joined CBSN to discuss what’s next between the two countries. Source