KOFI ANNAN, the United Nations secretary-general, is said to be struggling with depression and considering his future. Colleagues have reported concerns about Annan ahead of an official report this week that will examine his son Kojo’s connection to the controversial Iraqi oil for food scheme. Depending on the findings of the report, by a team led by the former US Federal Reserve chairman Paul Volcker, Annan may have to choose between the secretary-generalship and loyalty to his son. American congressional critics of the UN are already pressing him to resign over the mismanagement of the oil for food programme, and...