republican zeroing in if the witness had first-hand knowledge of key events. >> there are a number of events investigating which i cannot bring any first-hand knowledge. >> were you involved i the trump-zelensky phone called? >> i was not. >> are you involved in the possible military sales to ukraine will! >> i was not. i was not. >> did you ever talk to president trump in 2019? >> no, i have not. >> mick mulvaney? >> no, i have not. >> think you come ambassador. not sure what the ambassador is doing here today. >> juan: when president trump tweeted an attack on the former ambassador in the middle of the hearing. adam schiff then read the tweet. >> i will read one of these tweets. everywhere marie yovanovitch wentz turned bad, and the