beria immediately realized just how serious stunts condition was but he doctors from being called and left. the most dangerous thing was the fact that there was a traitor among the people close to stalin it was very and he was inexperienced and coming in to me cleverly disguised his motives and stomach trusted him that was his big mistake very have long been striving for power. resorted to all possible ways one could think of he was capable of and. it was not just beriah but every one of stalin's associates who had reason to seek his demise just left molotov and i just does make a particularly fearful of arrest. terrified of conspiracy against him decided to completely restructure his circle and at the same time to intimidate the people of his country once again. and does not should see me i had to send all families friends colleagues hundreds of people could have been affected so now it is even how to imagine that it could really be the case i won't be done he was given a list to remove the enemies of three people but their wives me one of these are designed to stand the ordered them

venezuelaner of the beria with columbia. >> try to find homes for hundreds of chimpanzee is used in scientific research. we travel to one facility in the louisiana, where chimpanzees' infected with hiv and hepatitis are being allowed to retire. u.s.lcome to the retirement home for chimpanzees. they have been subjected to scientific experiments for decades. most are infected with hiv or hepatitis. their reward is this haven, a national chimpanzee sanctuary. >> this is what god's waiting room for chimpanzees. >> well, we certainly think it is the best place for the chimpanzees to be. >> science and scientific ethics move on. the u.s. is still the only nation conducting in this experiment on chimpanzees plans to stop its work on almost all of its remaining 450 test animals. sending them back into the wild is not an option. few have the ability to survive, and they are now an endangered species. some come from the university of louisiana, where the humane society of america shot this undercover video. >> there is an issue of physical pain, but the larger issue is the psychological torment, isolate