he had boris nemtsov murdered in the shadow of the kremlin. >> this is personal insult.ical spokesperson. >> it's nonsense, it's nonsense. there's nothing to comment on. >> over the course of putin's time in power, his regime has been accused of involvement in the deaths of many of its critics, including the journalist anna politkovskaya, and a former kgb agent. some experts say there's dozens more like them. and then, there's those that live to tell. the man seen in this surveillance foot only at a u.k. convenience score is sergei schiphol, an ex-russian spy. he moved here to salisbury, england, eight years ago, after being released from prison in moscow, where he was convicted of selling secrets to britain's mi-6. in march, schiphol and his daughter, julia, were found unconscious on a shopping center bench in salisbury. police concluded that the pair had been poisoned with a military-grade nerve agent. while both survived, u.k. authorities placed the blame squarely on one person. >> it is tragic that president putin has chosen to act in this way. >> putin shot back, ca

boris nemtsov the russian opposition leader called it the most pro russian law ever passed by a foreignand senator mccain was a leader on that legislation. and we worked on many issues in these ensuing years. he always, you know, spoke the truth about the putin regime. he always spoke in support of the rights and freedoms of the russian people. he was somebody who was profoundly honorable and decent and principled, and i will always consider it among the greatest privileges and the greatest blessings of my life to have known and to have worked with senator john mccain. >> a deeply meaningful request at his passing. vladimir kara-murza, a pallbearer at this memorial service this week. we appreciate you being with us. >> thank you. >> want to check in with chris to see what he's working on for "cuomo prime time" at the top of the hour. chris. >> that was really interesting, j.b., and really gives a look into what john mccain was about. a very complex man. we're going to be taking on a new name in politics tonight, andrew gillum, the mayor of tallahassee, the man of the moment for the demo