1954 Geneva Conference left Geneva on May 3 and was replaced by his deputy Walter Bedell Smith. The State of Vietnam refused to attend the negotiations until Bidault wrote to Bảo Đại, assuring him that any agreement would not partition Vietnam. Bidault opened the conference on May 8 by proposing a cessation of hostilities, a ceasefire in place, a release of prisoners, and a disarming of irregulars, despite the French surrender at Điện Biên Phủ the previous day in northwestern Vietnam. On May 10, Phạm Văn Đồng, the leader of the Democratic Republic of Vietnam (DRV) delegation set out their position, proposing a
49th parallel north the 1846 Oregon Treaty. This agreement divided the Oregon Country between British North America and the United States by extending the 49th parallel boundary to the west coast, ending in the Strait of Georgia; it then circumvents Vancouver Island through Boundary Pass, Haro Strait, and the Strait of Juan de Fuca. This had the side effect of isolating Point Roberts, Washington. Although parts of Vancouver Island and parts of Eastern Canada are south of the 49th parallel, and parts of the United States (Alaska, Northwest Angle) are north of it, the term "49th parallel" is sometimes used metonymically to refer