In 2003 , Khodorkovsky was believed to be the wealthiest man in Russia ( with a fortune estimated to be worth $15 billion ) .
In 2003 , Khodorkovsky was was ranked 16th on Forbes list of billionaires .
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 .