president trump in his words walked away from a nuclear summit with north korea empty handed. now we are learning a closely held north korean secret that the president knew about may have played a role in why the talks collapsed. joining us now is james clapper, former director of national intelligence and cnn national security analyst. thank you for being with us. what we are told is that kim jong-un raised the possibility of dismantling under the watchful eye of american inspectors this nuclear power plant and weapons production area we've known about that's been public for some time. president trump went back to him and said you have to do that plus everything else and everything else apparently includes a different facility. kang song near pyongyang which