What country of origin does Alexei Tikhonov and Maria Petrova have in common?
Maria Petrova (figure skater) Maria Igorevna Petrova (Russian: Мария Игоревна Петрова ; born 29 November 1977) is a Russian pair skater. With partner Alexei Tikhonov, she is the 2000 World champion and a two-time (1999, 2000) European champion.
Nikita Petrov Nikita Vasilyevich Petrov (Russian: Ники́та Васи́льевич Петро́в , born 31 January 1957, Kiev) is a Russian historian. He works at "Memorial," a Russian organization dedicated to studying Soviet political repression. Petrov specializes in Soviet security services.