critical call, again a series of text messages. this one here, ambassador volker advising yermak. he says heard from white house, assuming president z or zelensky convinces trump he will get to investigate investigation. get to bottom of 2016 nailing down date for visit to washington. and wishes him good luck. all of this as the inquiry and those who are investigating believe shows a quid pro quo. >> indeed, susan malvo thanks very much. let's get to the messages with my cnn correspondent dana bash. and our correspondent for "the new york times." but first just a few days after president trump's call with the ukrainian president, ukraine's top diplomat, andriy sent a text saying the following. once we have a date we'll call for press briefing announcing