Mikhail Khodorkovsky
Mikhail Borisovich Khodorkovsky, sometimes known by his initials MBK, is an exiled Russian businessman, oligarch, and opposition activist, now residing in London. In 2003, Khodorkovsky was believed to be the wealthiest man in Russia, with a fortune estimated to be worth $15 billion, and was ranked 16th on Forbes list of billionaires.