In Cambodia, a genocide was carried out by the Khmer Rouge (KR) regime led by Pol Pot between 1975 and 1979 in which an estimated one and a half to three million people died. The KR had planned to create a form of agrarian socialism which was founded on the ideals of Stalinism and Maoism. The KR policies of forced relocation of the population from urban centres, torture, mass executions, use of forced labor, malnutrition, and disease led to the deaths of an estimated 25 percent of the total population (around 2 million people). The genocide ended following the Vietnamese invasion of Cambodia. At least 20,000 mass graves, known as the Killing Fields, have since been uncovered.