here. cnn legal analyst, but first go to cnn chief political analyst gloria borger and our senior white house correspondent pamela brown. gloria, first to you. when you read this letter the overall tone is defensive and angry and accusatory, and it's not exactly something we expect from someone who has bragged that impeachment is helping him. >> well, first of all, when i read it the first time seemed to me sort of the longest tweet in the history of america. what it is, one donald trump tweet one after the other complete with exclamation points and points to serious issues. this is written by the president of the united states. who clearly has difficult exhibiting any kind of self-control whatsoever. and i think as senators read this letter and they are about to be the jurors if the house votes for impeachment on the question of ukraine and in a larger sense on this president's