security interest that would be changed by regime change. can you think of downsides, death, cost, et cetera. how would this country become safer by overthrowing assad. >> i'm not sure regime change is still our goal there it was the goal of barack obama and hasn't really been our stated goal during this trump administration. but, defeating isis in iraq and in syria is still our goal. and i think that is in the national interest. >> tucker: but wasn't defeating isis one of the goals of the assad government? of course, isis was a radical sunni group. assad is allied with the shiites. he was fighting isis as well. why wouldn't we if we believe isis is the main enemy, functionally find ourselves on the side of assad? >> well, you're correct in this sense. and you are correct in many ways. it's complicated in syria. there is no question about