The largest tributary of the Mekong, the Mun River and its tributaries flows through Northeastern Thailand with a length of 3,200 kilometer. Livelihoods of the 10 million population living in the river basin depend on the richness of riverine ecosystems and natural resources. It is recorded that there were 256 species of fish in the Mun River.

       Over the last 4 decades, development projects driven by the World Bank, Japanese and the US governments, along with other international financial institutions such as the Japan Bank of International Corporation (JBIC), have destroyed the river drastically due to the 13 large dams and Kong-Chi-Mun Water Diversion Project.

       Suffering for decades, a movement of affected people in the river basin was created to voice their concern against such development and to highlight their struggles. They have not only been fighting against dams, but have also been demanding the decommissioning of dams to restore the river and livelihoods, and for social reparations for affected communities, especially for Lam Takong communities and lower Mun communities in Pak Mun, Rasi Salai and Hua Na. Their struggle is not only for people affected in the project sites, but also those that play an important role as an example for people affected or would be affected in other parts of the country and throughout mainland Southeast Asia.