we start this hour of cnn news center with a touch of drama. the donald trump s civil fraud trial today in new york. his expert witness going after a lawyer for the new york attorney general. telling him, quote, you ought to be ashamed of yourself. some fireworks here. trump attending these proceedings to take a. a lot of attention on these. he is expected to take the stand next week as the final defense witness. cnn s kara scannell live for us outside of the court. tell us, kara, who is this expert witness for the defense? why did he get so upset? reporter: boris, breonna, this is an expert witness, the final expert witness that the trump team called on his defense. and accounting professor from new york university. professor eli bartov. he was asked questions, he had been testifying all morning on this. the lawyer for the attorney generals office subjected to one of the lines of questioning saying the accounting professor is not a banker, so he is not qualified to answe