Alexander Litvinenko
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Alexander Valterovich Litvinenko was a British-naturalised Russian defector and former officer of the Russian Federal Security Service (FSB) who specialised in tackling organised crime. A prominent critic of Russian President Vladimir Putin, he advised British intelligence and coined the term "mafia state".
Litvinenko's grave at Highgate Cemetery in 2007
Litvinenko's grave in 2017
The report stated that the FSB operation to kill Litvinenko was probably approved by Nikolai Patrushev (left) and Vladimir Putin