GAYLE TZEMACH LEMMON, ADJUNCT SENIOR FELLOW, COUNCIL ON FOREIGN RELATIONS: White House saw across two administrations as the most effective force against ISIS. And so now this has all come to a head and really, I mean, I was having people sending me videos, Poppy and Jim, of just horrendous things, including a female politician who was taken from her car and murdered. And it was all captured on video. You know, watch what happens with the NATO defense minister going on right now. The U.S. has had very harsh words for Turkey. Congress is still considering sanctions. And everybody is trying to find this goldilocks between keeping a NATO ally on side and calling it to account.</s>POPPY HARLOW, CNN ANCHOR: Right.</s>JIM SCIUTTO, CNN ANCHOR: In the simplest terms, Gayle, by pulling out summarily, would the U.S. be held responsible? Should the U.S. be held responsible for allowing Turkey, in effect, to carry out those war crimes?</s>LEMMON: I mean I do think that the U.S. did not allow in the sense of -- you know, I mean people were trying very hard to mitigate. I was talking to folks on the ground who were trying very hard to keep this -- the worst of this from happening. And, Jim, I mean, I was talking to dads who had no idea if they were going to get through the day when all of this were happening. You know, dads who fled to Manbij and then came back to Kobani and were terrified that Turkish-backed forces were going to get there first. So I think this whole question of accountability, who holds whom accountable and for what, I think we're going to see play out.</s>MALVEAUX: Gayle Tzemach Lemmon, thanks very much. A White House official who listened to President Trump's controversial call with the Ukrainian president is now set to testify before impeachment investigators next week. We're going to speak to a Republican lawmaker who once referred to himself as a firewall against impeachment about the implications, coming up.
U.S. May Move Tanks into Syria