Who is Victor Fyodorov from Bel Canto: A Novel and what is their importance?

Victor Fyodorov, a Russian, falls in love with Roxane while he is detained in the Vice President's home. When he decides to declare his love to her he clarifies that his love is not a sexual kind of love, but rather a more wide-ranging and encompassing love. than that since he has a family at home. Instead, he tells her a story about art and his love of it, how he cannot live without a specific book of paintings for very long in his life. In the end, his declaration of love sums up the entire house's feelings about Roxane and how they are all so wildly in love with her and her talent.