The once-in-a-generation ballet star Natalia Osipova is renowned for her vibrant interpretations of classic ballerina roles. But her curiosity extends well beyond the ballet canon. This month, her eclectic repertory program "Force of Nature" makes its U.S. debut at New York City Center, with a portion of ticket proceeds going to the Ukrainian relief effort. Osipova talks with great candor about finding her truest self onstage, and about her evolving feelings on the role of the artist during wartime.