Don't bother him with facts. his mind was made up long ago.The problem Zlatan is that these Oligarchs as we call them are actually criminals and gangsters. As the USSR broke up they and their henchmen seized assets, often by murdering the rightful owners or administrators, making themselves immensely wealthy.
Like gangs everywhere they were rivals and frequently hated each other to the extent of murder. Having stashed enough money some fled each other to come to Britain, and then when Putin took power and set about the eight wealthiest oligarchs still in Russia, many more fled.
So we have these two different rival factions, plus a third one they also hate, the ex KGB agents, all potentially at war with each other.
Take this example. Oligarch Boris Berezovsky fled Putin to London to preserve his corruptly obtained cash that Putin was after and remained a bitter and vocal opposer of Putin for the rest of his life and thus liked by our politicians.
Berezovsky was a fellow Duma member with Roman Abramovich and they stole vast fortunes from the Russian state as Yeltsin's administration collapsed. But then arch villain Abramovich stole one of Berezovsly's richest oil company assets and became hated by Berezovsky. In rhe midst of all this Litvinenko as a KGB agent upset Berezovsky enough to him to earn bitter hatred, possibly by revelations to Putin.
When Litvinenko was murdered Berezsovsky was a prime police suspect until the politicians got involved, started accusing the Russian state and propaganda took over. As I've explained in a previous post about that polonium 210 killing, all the released evidence was completely false, but good enough for a public who didn't understand the subject.
Personally I think Berezovsky had Litvinenko murdered, he was a first order thug with huge wealth, a foul temper and a vicious streak, and the means were freely available as I've explained. Berezovsky had actually taken Abramovich to court in Britain to try to recover the stolen oil assets but failed. This is what the judge said about Berezovsky:
Last August, however, Mrs Justice Gloster, who presided over their high court battle, came to a different conclusion. Her verdict was devastating for Berezovsky. In withering terms, she dismissed Berezovsky's case. She described him as "dishonest" and "deluded". Her thinking was remorseless: "On my analysis of the entirety of the evidence, I found Mr Berezovsky an unimpressive, and inherently unreliable, witness, who regarded truth as a transitory, flexible concept, which could be moulded to suit his current purposes."
So I hope you can see why in this situation of three factions of so many mutually hating Russian criminal gangsters in Britain I find it hard to accept that they are not guilty of many of the reprisal killings and that Putin alone is.
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Nothing will shake his determination that Putin is responsible.