Paul Wolfowitz personally directed the World Bank’s head of human resources to offer Shaha Riza, a bank official with whom he was romantically involved, a large pay rise and a promotion as part of an external secondment package, according to two sources who saw a memorandum written by the bank president.

The memorandum, which according to two sources was dated August 11 2005, specifies in detail the terms that Xavier Coll, the World Bank’s vice-president for human resources, should offer to Ms Riza, who was subsequently seconded to the US State Department.