During World War II his grandparents escaped the Nazi and Ustaše persecutions, and his grandmother died in Switzerland in 1943, just as she was given a visa to go to the "free countries".
During World War II his father and grandmother escaped the Nazi and Ustaše persecutions through Rijeka to Italy. Kraus grandmother died in Switzerland in 1943, just as she was given a visa to go to the "free countries".