commentator matthew kim -- served as a speechwriter and senior advisor to president nixon. >> i didn'tnow at the time, but next and had entertained this idea. someone said that would be obstruction of justice. i didn't recommend gardening -- getting subpoena tips. executive privilege existed, everybody. if they got right of this -- and just said in effect, i think he would have moved right through it. president next and said in his memoirs, if you have burned the tapes he would have survived. i think that's right. >> tonight at 8:00 eastern on c-span's qa on day. next, nasa administrator decides on the space agency's 2018 butter must. he also talks about future projects including in mars rover mission entities -- exploration. this hearing is an hour.

matthew is on the line for containment. what is your containment strategy? caller: well, there is not one strategy that would enable us to deal with the issue. military action gives kimong-un the ability to retaliate and look strong. if you try to bully him or show force he will try to use it and turn it around on us and use anything he can to provoke. they have been waiting. his grandfather was waiting for somebody to react, his father was waiting for somebody to react so he could look strong. so military action, it is just going to provoke something that we cannot get back from. negotiations more than likely will not be followed. initially justw because we do not have the trust with them and he does not seem to be what i would consider a man of honor, honoring his word. he will do what he wants to do and he is a dictator so he runs his own schedule and is not answer to anybody else. there is no magic pill that will fix the problem. we need to have all of our partners in the region, whether it is south korea, japan, china or russia, whoever it might be. we need to negotiate with them and contain them. the caller earlier had a good idea. mightwere able to, it seem li