we begin today with president trump's national security advisor am bass do, ambassador john bolton, good to have you here. >> good to be with you. >> brennan: we have different versions of the story as to why this summit failed to produce any results. why was the president unable to negotiate further? >> i don't consider the summit a failure. i consider it a success defined it is a real estate protecting and advancing american national interests. there was extensive preparation or this meeting. extensive discussions between the president and kim jong-un and the issue really was whether north korea was prepared to accept what the president called ththe big deal, which is denuclearize entirely under a definition the president handed the kim jong-un, and have the potential for an enormous economic future. or try to do something less than that which was unacceptable to us. so the president held firm to his view. he deepened his relationship with kim jong-un. i don't view it as a failure...