from inside that nine-hour interview with a former top russian advisor yesterday. catherine herridge is on the capitol hill for us where we await another witness to appear any moment. we re heading into a complex week of testimony on capitol hill. the simple way to think of it is two tracks, an official traditional diplomatic track when it came to ukraine and then there was an unofficial back channel led by the president s personal attorney rudy giuliani. the question is whether any of those activities broke the law, rise to an impeachable offense or simply the word i want to use is upsets the old order here in traditional washington a short time from now we re expecting another witness this morning, george p. kent, a senior state department official who at one time worked very closely with the former u.s. ambassador to the ukraine, marie yovanovitch. she was removed two months early from her position.