only diplomatic option left is to end the regime in north korea by effectively having the south take it over. >> all right. that's a little look at who is now becoming the national security adviser, replacing general h.r. mcmaster with john bolton, a man, according to our white house reporter kaitlan collins, negotiating this job with the president he promised not to start any wars. bringing my panel back in. michael allen, starting with you, because you, from your former -- bush 43 days over at the white house, you know all about bolton. we were talking commercial break about how he was held up for months and months. you heard the mash-up. tell me about the man. >> the mash-up there, everything that the democrats knew of him when he was nominated to be u.n.