Are we to believe only Russia conducts extra-judicial assassinations of people of interest? And do we expect the governments responsible to come out and admit it?
To me this circus around this particular assassination just appears to stem from having to justify sanctions against Russia by the UK. But then again, I don't expect a country to come out and admit that they'll sanction a country just to weaken it's economy and provoke social instability until they get a more favorable government.