I thought the movie was well done. I saw Litvinenko more as an opportunist than I did a hero. It is clear that Litvinenko was working for Berezovsky, how long, is not clear, but Berezovky certainly had an ax to grind against Putin, and I felt that Litvinenko was doing more to help Berezovky than of having any idealistic longing to expose the "corrupt" Putin or Russian government." Anyway, Russia was corrupt long before Putin came along, so it really was a corrupt institution that Putin inherited, and he has engaged in some acts to clean it up. As a KGB agent, I am sure Putin was well familiar with that corruption, but his reputation before taking power, was not known to be corrupt. On the contrary, he had a reputation for not taking bribes, reported by more than one person, some people who you would not expect to be "working for him." One should keep in mind that Litvinenko was also a part of that corrupt Russian government himself. Further, I think that Litvinenko was involved in several schemes to make money while in Great Britain. . Berezovsky stopped supporting him, so he had to go elsewhere, and it is clear he was disgruntled. Who knows what happened to him, but it looks to me like another frame up of the Russian government, a government easy enough to frame because of its long-standing reputation as corrupt. Anyway, the west has become Russia's rival in corruption, almost beating out the Russians in the corruption contest. And after the Skirpal incident, the Litvinenko poisoning looks even more problematic.