Storm-related floods killed at least 12 people in Sicily, Italian authorities said Sunday, including nine members of two families who were spending a long weekend together when water and mud from a swollen river overran their rented villa. After surveying the stricken Mediterranean island by helicopter, Italian Premier Giuseppe Conte identified two more of the victims as a German couple whose car was swept away by floodwaters near Agrigento, a tourist town known for its ancient Greek temples....