The present independent midterm review was envisaged in the Secretary-General's letter S/2004/797, in which the Security Council was requested to extend the mandate of UNOWA to the end of 2007.
2. 秘书长的信（S/2004/797）设想了这次独立中期审查， 秘书长在该信中请安全理事会将西非办的任期延长至2007年底。