Mikhail Khodorkovsky was the richest oligarch in Russia. He criticised Putin in 2003 and spent the next 10 years in prison. The other oligarchs learned the les

Mikhail Khodorkovsky was the richest oligarch in Russia. He criticised Putin in 2003 and spent the next 10 years in prison. The other oligarchs learned the lesson. https://en.wikipedia.org/wiki/Mikhail_Khodorkovsky https://en.wikipedia.org/wiki/Mikhail_Khodorkovsky