The Wildlife Conservation Society (WCS) is a US non-profit, tax-exempt, private organization established in 1895 and based in New York, that saves wildlife and wild places by understanding critical issues, crafting science-based solutions, and taking conservation actions that benefit nature and humanity. With more than a century of experience, long-term commitments in dozens of landscapes, presence in more than 60 nations, and experience helping to establish over 150 protected areas across the globe, WCS has amassed biological knowledge, cultural understanding and partnerships to ensure that wild places and wildlife thrive alongside local communities. The WCS Country Program in Cambodia, is a relatively large, vibrant program with long-term programs in four major forested and/or wetland landscapes: Eastern Plains (Keo Seima Wildlife Sanctuary), Northern Plains, Major Rivers, and Tonle Sap.

Keo Seima Wildlife Sanctuary (KSWS) covers nearly 317,456.00 ha, protecting lowland and hill semi-evergreen and deciduous forest. It supports globally significant primate and bird populations. Nearly 25,000 people live on the edge of or inside the protected area, many of them ethnic Bunong. Following the loss of forest to the south and west, KSWS is now located on a deforestation frontier. The protected area has been a REDD+ project, generating and selling a significant volume of carbon credit. The challenge now is to prevent deforestation and maintain the integrity of KSWS in the face of mounting threats. A five-year Strategy has been developed to achieve this goal, by motivating and inspiring government, local communities, and civil society to value and protect KSWS.