is big news in this inquiry and very bad news for this white house. anderson? >> jim acosta, thanks very much. congressman ro khanna sits on the oversight committee, which has helped conduct the closed door hearings that have laid much of the groundwork for what we're going to see on wednesday. he joins me now. in today's transcript release, we learned that a person named laura cooper, the pentagon's deputy assistant secretary for russia, testified that ukraine was very much aware of their military aid being blocked and that a statement on opening investigations would unfreeze the aid. i'm wondering how critical is what ukraine knew and when they knew it to the overall case that you're presenting to the american public. >> well, it's absolutely critical. it goes to the pressure that they were facing, and they actually didn't want this revealed because they felt that their relationship with the united states was at risk. here, anderson, is the important part. laura cooper, the career official at the state department, at the defense department, sounded the alarm bells. they knew that this was wrong