Konstantin Nikolaev Konstantin Nikolaev Konstantin Nikolaev () is a billionaire Russian businessman who is a co-owner of and , the largest private rail operator in Russia, CIS, and the Baltic states. He is a major investor in American Ethane and serves on its board. Late July 2018, his net worth was estimated at $1.2 billion. He allegedly is a financial supporter of Maria Butina. Through Igor Levitin, Alexey Mordashov, Arkady Rotenberg, Gennady Timchenko, and Alexander Voloshin, Konstantin Nikolaev is a partner and close associate of numerous persons in Vladimir Putin's inner circle. In 1996, Nikolaev, Nikita Mishin, Andrei Filatov, and Alexey Mordashov
Sparring some schools, permission to begin sparring is granted upon entry. The rationale for this decision is that students must learn how to deal with a fast, powerful, and determined attacker. In other schools, students may be required to wait a few months, for safety reasons, because they must first build the skills they would ideally employ in their sparring practice. Sparring is normally distinct from fights in competition, the goal of sparring normally being the education of the participants. The educational role of sparring is a matter of some debate. In any sparring match, precautions of some sort must be