Warning Denuclearization News Today

Kim jong-un contradicted that. sources saying north koreans warned in a secret letter to the trump administration talks may fall apart. this, apparently prompting president trump to cancel secretary of states mike pompeos fourth planned visit to pyongyang. barbara starr is with us. how did president trump answer on whether there are concrete steps to denuclearize? >> when they spoke to reporters, he didnt want to show his hand. instead, he left it to the hope of diplomacy from the state departme...