trump ask, so he's going to do the investigation? ambassador sondland replied, he's going to do it, adding that president zelensky will do anything you ask him to. how important is that testimony for the investigation? >> i think it's important because, first of all, it's firsthand testimony. there's been a lot of discussion. i know republicans have argued there's certain testimony that was not firsthand. here you have an eyewitness to a conversation. clearly the president didn't think that other people were going to be hearing that. and it shows the president's intense interest in that investigation. that's something that's apparent, but it really goes to the core of it. i think it's more evidence -- you know, you're going to hear a lot from witnesses that will say it's a quid pro quo, but it's more evidence that goes to the heart of the matter. >> this is a conversation overheard between president trump and ambassador sondland, who will testify in public this coming week. ross, what position does this put him in?