When the news broke that Dominique Strauss-Kahn, 62, the managing director of the International Monetary Fund , had been arrested for sexual assault and attempted rape in New York City, his wife Anne Sinclair wasted no time in declaring her unquestioned belief in his innocence. The heiress to an art-gallery fortune, Sinclair, also 62, is a celebrity in her own right, having been an award-winning radio-and-television journalist in France.