on the spec rum with corker. either one extreme would be he's making the case that the president is not fit for office. the other extreme is that this is political sour grapes. he got sideways with trump. he's retiring so he's speaking out now. where do you see it in terms of your level of concern about his comments? >> i'm concerned about some of the comments he makes but also at the same point i don't know where this all came from. i thought they got along pretty well. then one day they tweet back and forth and i wonder where this came from. he was being considered for secretary of state at one point. i've said this repeatedly. i think some of the president's comments on international issues actually shows unpredictability, which i think has been official in north korea, when you hear