“The Mikhailovsky Theater of St. Petersburg, Russia, scored a coup last fall by luring two of ballet’s biggest stars” – Natalia Osipova and Ivan Vasiliev – “from the Bolshoi, and it was to have brought them to the United States this summer for a run of shows at Lincoln Center. But those plans have been scrapped … because American Ballet Theater exercised a no-compete clause involving those very same dancers.”