Semion Mogilevich

Who is Semion Mogilevich?

Semion Yudkovich Mogilevich is a Ukrainian-born organized crime boss, believed by European and United States federal law enforcement agencies to be the "boss of bosses" of most Russian Mafia syndicates in the world. Mogilevich is believed to direct a vast criminal empire and is described by the FBI as "the most dangerous mobster in the world". He has been accused by the FBI of "weapons trafficking, contract murders, extortion, drug trafficking, and prostitution on an international scale."

Mogilevich's nicknames include "Don Semyon", and "The Brainy Don". He is said to control RosUkrEnergo, a company actively involved in Russia–Ukraine gas disputes.

Based in Moscow, he has three children and is most closely associated with the Solntsevskaya Bratva crime group. Political figures he has close alliances with include Yury Luzhkov, the former Mayor of Moscow, Dmytro Firtash and Leonid Derkach, former head of the Security Service of Ukraine. Oleksandr Turchynov, who was designated as acting President of Ukraine in February 2014, appeared in court in 2010 for allegedly destroying files pertaining to Mogilevich.