he had boris nemsov murdered in the shadow of the kremlin. >> this special insult.from a politician. >> that is putin's top aide and spokesman. >> it's nonsense. it's nonsense. there is 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 the critics including the journalist and the former kgb agent. some russia experts say there are dozens more like them. and then there are those who live to tell. the man seen in this surveillance footage at a uk convenience store is sergei skripal, a ex-russian spy. he moved here to salisburiening glanld eight years ago after being repoliced from prison in moscow where he was convicted of selling secrets to britain's mi 6. in march xripal 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 and while both managed to survive, u.k. authorities place the blame squarely on one person. >> it is tragic that president putin has chosen to act

legislation that designated the street in front of the russian embassy in washington, d.c., as boris nemsoventioned, senator mccain is one of those people thanks to him i'm actually alive and able to speak to you now. last year about 18 months ago when i was lying in hospital in moscow in a coma after severe poisoning, senator mccain is one of the people who raised public attention to my case and public attention and public international attention is often the only protection, the only defense we have. i can tell you over the many years we worked together an many issues, when he no stronger, no more principle supporter than john mccain. he is enemy of the corrupt and authoritarian kremlin but a true friend of the russian people. and this is a huge loss not just for people in the united states but for many people around the world. i snow john mccain will be missed by many and i will always consider it among the greatest blessings and privileges of my life to have known him and to have worked together with him for so many years. >> you represent certainly one of the great examples of the inte