An Argentine court has approved a deal to return a long-lost 18th-century Italian portrait, which was looted from a prominent Jewish art dealer during World War II, to his heir.The agreement paves the way for the long-sought return of Portrait of a Lady to Marei von Saher, the sole surviving heir of Dutch-Jewish art dealer Jacques Goudstikker, whose celebrated collection was sold under duress to Nazi officials after Adolf Hitler’s Germany invaded the Netherlands in 1940. Patricia Kadgien, the daughter of the late high-ranking Nazi official Friedrich Kadgien, and her husband, Juan Carlos Cortegoso, were charged with aggravated cover-up last...