“The U.S. dance troupe is in Cuba for the 22nd International Ballet Festival of Havana, convened this year in honor of Alicia Alonso, who continues to lead Cuban ballet despite being nearly blind for decades. Alonso will turn 90 on Dec. 21. She remains an extremely demanding teacher known for her fiery temper, but also for a preternatural understanding of dance and an unparalleled sense of talent.”