This book by the Global Environment Facility (GEF) Evaluation Office examines to what extent the GEF has met the expectations expressed at the Earth Summit in 1992. It uses overall performance studies (OPSs) of the GEF Evaluation Office to examine the GEF response to the nine expectations from Rio: provide additional funding; address national priorities; respond to and support conventions; enhance international cooperation; mainstream sustainable development within a new green economic order; be given adequate funds to manage; contribute to global environmental benefits; engage non-governmental organisations (NGOs); and foster innovation. The review, which relies mostly on qualitative methodologies, shows that, despite difficulties, the GEF has made progress towards achieving these expectations.