to prepare for this in the next election. trump's own chief of staff warned the homeland security chief to avoid bringing up election interference because it might anger the president. i'm joined by the former u.s. am bar d -- ambassador to russia. you may be one of the most visible former united states ambassadors to russia because of how central this has been, sir. so big picture, what did you see as important in mueller's emphasis in putin's activities during that press conference? >> i'm glad he reminded the american people of the fact that we were attacked by vladimir putin and his agents and his proxies and his military intelligence officers. i would go further to say and to remind your viewers that the mueller report only talked about some aspects of what the russians did because he was focussed on criminal activity. but in addition to stealing data