First Indochina War on July 21, 1954, recognized the 17th parallel north as a "provisional military demarcation line", temporarily dividing the country into two zones, communist North Vietnam and pro-Western South Vietnam. Negotiations between France and the Việt Minh started in Geneva in April 1954 at the Geneva Conference, during which time the French Union and the Việt Minh were fighting a battle at Điện Biên Phủ. In France, Pierre Mendès France, opponent of the war since 1950, had been invested as Prime Minister on June 17, 1954, on a promise to put an end to the war, reaching a ceasefire in four
1954 Geneva Conference negotiations to that end should resume at an appropriate time. The Belgian and British delegations said that while they were not going to accept "the Soviet and Chinese proposals, that did not mean a rejection of the ideas they contained". In the end, however, the conference participants did not agree on any declaration. While the delegates began to assemble in Geneva from late April, the discussions on Indochina did not begin until May 8, 1954. The Viet Minh had achieved their decisive victory over the French Union forces at Dien Bien Phu the previous day. The Western allies did not