Maria Altmann successfully sued the Austrian government for return of paintings by Gustav Klimt. Now she’s loaned them to the Los Angeles County Museum of Art. “The three-month loan to LACMA of a textbook painting is partly a gesture of gratitude to the city where Altmann emigrated. But it’s also a holding action. With the seven-year legal battle over title to the art now settled, the heirs face a daunting question: What obligations — if any — does the family have in determining the ultimate fate of a painting of monumental cultural significance?”