*REVISED Version September 2004
The Millennium Development Goals (MDGs) are unlikely to be met by 2015, even if huge increases in development assistance materialize. The rates of progress required by many of the goals are at the edges of or beyond historical precedent. Many countries making extraordinarily rapid progress on MDG indicators, due in large part to aid, will nonetheless not reach the MDGs. Unrealistic targets thus may turn successes into perceptions of failure, serving to undermine future constituencies for aid (in donors) and reform (in recipients). This would be unfortunate given the vital role of aid and reform in the development process and the need for long-term, sustained aid commitments.