welcome edward djerejian, who served as ambassador to syria. the bakerector institute for public policy and comes to us from houston. great to have you with us. edward: good to be here with you. david: if he pulls troops out right now -- what turns on that, what difference does it make? edward: i think you have noticed there is a tug and the administration as to what we should do. the president made it clear during his campaign that he would want to withdraw troops afghanistan,raq, and he was totally against nationbuilding and getting bogged down in these countries. that tendency on this part has not gone away. at the same time, his national security group, especially the military at the pentagon -- are arguing that the job is not done. even president trump has said 90% of isis has been defeated in syria. but there is that 10%. according to the press, about 3000 isis personnel that are east of syria in the the euphrates river going towards the iraqi border. the job is not completely done. that is one factor. the other important consideration de