public declaration of investigations. >> that came out in the bill taylor testimony. we will also hear from christopher anderson as well today. he is a career foreign service officer. and he is going to testify about concerns of the then national security adviser, john bolton had. he says this, john bolton cautioned that mr. guiliani was a key voice with the president on ukraine, which could be an obstacle to increased white house engagement and, of course, guy, john bolton has been a consistent player throughout this testimony. witness after witness has described his role in raising alarms internally about the push of rudy guiliani, about the push by the president and the push to release that aid. the question is, will he be one of those witnesses that come here. democrats want to talk to him. it's uncertain if he will come. guys. >> also, before you go, talk to us about the most important things you have learned from testimony yesterday. >> reporter: well, i would say the top thing that came out in his opening statement that he was raising red flags that the