Shifting to a green economy recognizes the value of nature for millions of people in the Greater Mekong Subregion (GMS), now and in the future. Many are moving forward on a green growth agenda in the understanding that this development pathway offers the potential for sustainable economic development with more equitable sharing of the gains. Currently, there are a number of unique opportunities for the transition to a green economy. This report from WWF focuses on some signals of policy progress on this transition, barriers to progress, and recommendations for moving the agenda forward. The report highlights the UNDP-UNEP Poverty-Environment Initiative’s support to countries in the GMS in conducting Climate Public Expenditure and Institutional Reviews (CPEIR) as a tool to help countries review current climate and environment expenditures.