The Khmer Rouge, led by Pol Pot, seized control of Cambodia in 1975 and sought to transform the country into an agrarian utopia. Over the next four years, around 25% of Cambodia's population died from starvation, overwork, or executions as the Khmer Rouge forcibly removed people from cities and purged perceived enemies. The regime's radical policies were inspired by Maoism and sought to eliminate capitalism, religion, and foreign influences from Cambodian society. By 1978, Vietnam invaded and deposed the Khmer Rouge regime due to its brutal policies and border attacks.