The ballet director of the Bolshoi Theater Makhar Vaziev gestures as he conducts a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)Two ballerinas rest as other dancers perform during a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)The ballet director of the Bolshoi Theater Makhar Vaziev talks with dancers at the Bolshoi Theater backstage in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)The ballet director of the Bolshoi Theater Makhar Vaziev gestures as he conducts a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)The ballet director of the Bolshoi Theater Makhar Vaziev gestures as he conducts a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)The ballet director of the Bolshoi Theater Makhar Vaziev gestures as he conducts a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)Dancers Alyona Kovalyova and Georgy Gusev perform during a rehearsal of Maurice Bejart's Gaiete Parisienne in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)Dancers Artemy Belyakov and Ekaterina Shipulina perform during a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)Makhar Vaziev, the ballet director of the Bolshoi Theater gestures as he conducts a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)A ballerina looks at her smartphone as others prepare for a performance during a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)Makhar Vaziev, the ballet director of the Bolshoi Theater, gestures as he conducts a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)Ballerina Olga Smirnova speaks to the ballet director of the Bolshoi Theater Makhar Vaziev during conducting a rehearsal in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)Georgy Gusev and other dancers perform during a rehearsal of Maurice Bejart's Gaiete Parisienne in the Bolshoi Theater in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)