didn t testify. but former national security adviser john bolton could know more than all of them about the allegations that president trump abused his power to leverage the ukrainians to investigate joe and hunter biden. john bolton has been one of the most mysterious figures in the whole ukraine saga. one of the biggest stars players in this episode with ukraine yet an offstage character almost the entire time in the impeachment probe. reporter: friday after more than two months of silence a tease from john bolton. in a series of tweets and later in an encounter with reporters he accused the white house of blocking his access to his personal twitter account. they attached software to it. ant tw and twitter unattached it. reporter: bolton didn t explain what it meant and the white house denied freezing the twitter account. of course not. no. i actually had a good relationship. reporter: in a tweet bolton asked whether the white house
testified bolton met with ukraine s president in august and warned what it could take to lift a hold on u.s. military aid to ukraine. it would hang on whether president zelensky was able to favorably impress president trump. reporter: bolton could know so much more. two weeks ago his lawyer wrote a letter saying bolton was involved in many relevant meetings and conversations not yet discussed in the testimonies thus far. what could he have witnessed? john bolton would have had more meetings with president trump than any witness we ve heard from to date. so anything the president said in john bolton s presence about the pressure campaign on the ukrainians would be enormously significant testimony. reporter: including one meeting that an aide testified bolton had with trump in august where the aide said bolton tried and failed to get trump to lift the hold on u.s.itary aid to
twitter and he s teasing that he s ready to tell you a few things. the former national security advisers claims the white house used software to block access to his personal twitter account. white house press secretary is pushing back on that suggesting his age may play some role here. i don t know a whole lot about it, but sometimes i ll use my father as an example. somebody who is of an advanced age may not understand that all you have to do is contact twit around reset your password, if you have forgotten it. i ll just leave it at that. so the back and forth between bolton and the white house comes after john bolton s lawyer says his client has relevant information on ukraine that hasn t been disclosed yet. here s cnn s brian todd with more on how bolton hangs over the impeachment proceedings at this point. reporter: he s been one of the ghosts of the impeachment hearings on a list of key figures like mike pompeo, rudy giuliani and mick mulvaney who
people have to remember about john bolton he has served in the justice department, served in government in a wide range of agencies, a wide range of positions. he is a bureaucratic in-fighter of the highest degree. he is not going to let the process kind of run away with his information. he s holding that information close to the vest. he s specifically asked for a legal ruling before he decides to start talking. he s got his book contract lined up. he s picked up 800,000 twitter followers over the last few days. when he speaks it s going to be with authority and with accuracy and on his terms. really what he is signaling so far. who do you think is more nervous about him speaking? president trump or rudy giuliani? huh. i think the president would and should be very nervous about this, because they left on very bad terms. some say he was fired. bolton insists he resigned. it s not it s not going to be pretty when it ask come out and
put them forth. it s though documents i think, that are really going to be the key to unlocking some of this. very good point. earl lewis, stay with us. you have more to talk about. shan wu, always appreciate your insight. thank you both g. to see you. up next, mistakes made, but no top-down bias. sources tell us about a report how the fbi handled its investigation into russia election interference and the trump campaign. also, former national security adviser john bolton returning to twitter with a series of how some are describing it mysterious tweets including an about kookization thkookization accusation the white house blocked his twitter account. how they kept him from speaking out. and an interview with vice president joe biden covering a range of attacks including his mental fits in coming from the oval office. job by preventing, early gum disease, and killing up to 99.9% of germs.