The Geneva Conference
Although Cambodia had achieved independence by late 1953, its         military situation remained unsettled. Noncommunist factions of the         Khmer Issarak had joined the government, but communist Viet Minh         activities increased at the very time French Union force were stretched         thin elsewhere. In April 1954, several Viet Minh battalions crossed the         border into Cambodia. Royalist forces engaged them but could not force         their complete withdrawal. In part, the communists were attempting to         strengthen their bargaining position at the Geneva Conference that had         been scheduled to begin in late April.         
The Geneva Conference was attended by representatives of Cambodia,         North Vietnam, the Associated State of Vietnam (the predecessor of the         Republic of Vietnam, or South Vietnam), Laos, the People's Republic of         China, the Soviet Union, France, Britain, and the United States. One         goal of the conference was to restore a lasting peace in Indochina. The         discussions on Indochina began on May 8, 1954. The North Vietnamese         attempted to get representation for the resistance government that had         been established in the south, but failed. On July 21, 1954, the         conference reached an agreement calling for a cessation of hostilities         in Indochina. With respect to Cambodia, the agreement stipulated that         all Viet Minh military forces be withdrawn within ninety days and that         Cambodian resistance forces be demobilized within thirty days. In a         separate agreement signed by the Cambodian representative, the French         and the Viet Minh agreed to withdraw all forces from Cambodian soil by         October 1954.         
In exchange for the withdrawal of Viet Minh forces, the communist         representatives in Geneva wanted full neutrality for Cambodia and for         Laos that would prevent the basing of United States military forces in         these countries. On the eve of the conference's conclusion, however, the         Cambodian representative, Sam Sary, insisted that, if Cambodia were to         be genuinely independent, it must not be prohibited from seeking         whatever military assistance it desired (Cambodia had earlier appealed         to Washington for military aid). The conference accepted this point over         North Vietnam's strenuous objections. In the final agreement, Cambodia         accepted a watered-down neutrality, vowing not to join any military         alliance "not in conformity with the principles of the Charter of         the United Nations" or to allow the basing of foreign military         forces on its territory "as long as its security is not         threatened."         
The conference agreement established the International Control         Commission (officially called the International Commission for         Supervision and Control) in all the Indochinese countries. Made up of         representatives from Canada, Poland, and India, it supervised the         cease-fire, the withdrawal of foreign troops, the release of prisoners         of war, and overall compliance with the terms of the agreement. The         French and most of the Viet Minh forces were withdrawn on schedule in         October 1954.

