Cambodia is sadly known for the terrible crimes committed during the Khmer Rouge regime between 1975 and 1979. The history that followed this period was marked by a multifaceted conflict that lasted for nearly 20 more years. In this particularly complex context, the process of disarmament, demobilization, and reintegration (DDR) was essential to guarantee the transition of this devastated country towards peace and stability. The objective of this article is to present the initiatives of DDR in Cambodia between 1992 and 2002, the challenges and difficulties brought by their implementation, and the causes of their failure. The article also outlines the government's policy that led to the dismantlement of the Khmer Rouge in the 1990s, as well as the arms control programs implemented between 2000 and 2008. These two measures contributed successfully to pacify the country, to improve security conditions and to mitigate the failure of DDR.