Despite various reform efforts, significant inefficiencies in United Nations (UN) management operations persist. In September 2005, heads of UN member states approved a resolution that called for a series of reforms to strengthen the organization. As the largest financial contributor to the UN, the United States has a strong interest in the progress of UN reform initiatives. GAO was asked to (1) identify and track the status of UN management reforms in five key areas and (2) identify factors that may affect the implementation of these reform initiatives. To address these objectives, GAO reviewed documents proposing UN management reform and interviewed U.S. and UN officials.