Friday marks the 10th anniversary of Mikhail Khodorkovsky’s arrest.
Mikhail Khodorkovsky was once the wealthiest man in Russia.
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He became an oligarch in the chaotic and ruthless post-Soviet 1990s and eventually built the country's biggest oil firm, Yukos.
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But he was ultimately thrown in jail after he challenged Vladimir Putin and called him out on the corruption of the Russian government.
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On October 25, 2003 he was arrested and eventually sentenced to seven years on charges of fraud and tax evasion. As his sentence was nearing its end, he was sentenced to a further seven years on charges of embezzlement and money laundering.
He has called all charges against him politically motivated.
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