Andrei Guriev is deputy chairman of PhosAgro, one of the world's largest producers of phosphate-based fertilizers. A former communist committee leader in Moscow, Guriev got his start as deputy director at Mikhail Khodorkovsky's Menatep Group in 1990. After Khodorkovsky, his former boss and once Russia's richest person, went to jail, Guriev led a buyout of Menatep subsidiary PhosAgro. His son, Andrei A. Guriev, is PhosAgro's CEO and was sanctioned by the EU on March 9. Guriev owns Witanhurst estate, which is the second largest in London after Buckingham Palace.