Kojo worked for the company in West Africa from 1995 to 1997, and was employed as a consultant until the end of 1998 - when it won the UN oil-for-food contract. He continued to be paid until last year, apparently without his father's or the UN's knowledge. Mr Annan said: "As I had always hoped and firmly believed, the inquiry has cleared me of wrongdoing." But the report was by no means a vindication of his involvement in the scandal.