Canadian Prime Minister Mark Carney has named Louise Arbour, a former Supreme Court justice and international war crimes prosecutor, as Canada's next governor general (the monarch's representative and the country's ceremonial head of state). Arbour, 79, is best known for her work as chief prosecutor at international criminal tribunals investigating atrocities in Rwanda and the former Yugoslavia, including securing the indictment of sitting Serbian President Slobodan Milošević — a historic first. Carney said the appointment reflected his belief in the strength of global institutions, while Arbour herself accepted the role "with a deep sense of duty," pledging to uphold Canada's constitutional traditions during her five-year term.