efforts in the past at prosecuting the previous government. i think mr. lutsenko in my estimation and i said this to mayor giuliani when i met with him, was interested in preserving his own position. he wanted to avoid being fired by a new government in order to prevent prosecution of himself, possible prosecution of himself, possibly also this is something that president poroshenko would have welcomed because he probably would have avoided any efforts to prosecute president poroshenko as well so making allegations like this and making sureer that reaching u.s. media, think mr. lutsenko was trying to make himself be an important and influential player in the united states. >> ambassador, let me ask you about the allegations against joe biden because that has been a continuing refrain from some of my colleagues as well. why was it you found the allegations against joe biden related to his son or burisma not to be believed? >> simply because i've known