allegation that the kremlin might be behind the poisoning. [ speaking in a non-english language ] translator: doesn t mean that s all he needs to be poison. who needs them anyway? if they wanted to, they probably would have followed through. reporter: just a few days ago, a general from a washington-based tech says, they may have no details about a palace allegedly under construction from vitamin putin, which the kremlin denies, died in jail after unexpectedly being diagnosed with leukemia. the kremlin hasn t commented on that case. [ speaking in a non-english language ] reporter: let me putin called camila for s death a tragedy and said he fully trusts russia s investigation into the abrupt crash and will bring the truth to light. of course, those are just a couple of the cases are enemies of vladimir putin have been harmed or even killed, brianna. of course, another, being the dining down of boris nets off in front of the kremlin in 2015, another case where the kremlin vehe