Upstream from that point, the Mekong remains the frontier of the Kingdom of Siam, in accordance with Article 1 of the Treaty of 3 October 1893."This would deem the temple as being located within Thai territory. However, the resulting topographic map, which was sent to Siamese authorities and used in the 1962 International Court of Justice (ICJ) ruling, showed the line deviating slightly from the watershed without explanation in the Preah Vihear area, placing all of the temples on the Cambodian side. Following the withdrawal of French troops from Cambodia in 1954, Thai forces occupied the temple to enforce their claim. Cambodia protested and in 1959 asked the ICJ to rule that the temple and the surrounding land lay in Cambodian territory. The case became a volatile political issue in both countries. Diplomatic relations were severed, and threats of force were voiced by both governments. The court proceedings focused not on questions of cultural heritage or on which state was the successor to the Khmer Empire, but rather on Siam's supposed long-time acceptance of the 1907 map. Arguing in The Hague for Cambodia was former U.S. Secretary of State Dean Acheson, while Thailand's legal team included a former British attorney general, Sir Frank Soskice. Cambodia contended the map showing the temple as being on Cambodian soil was the authoritative document. Thailand argued that the map was invalid and that it was not an official document of the border commission, and that it clearly violated the commission's working principle that the border would follow the watershed line, which would place most of the temple in Thailand. If Thailand had not protested the map earlier, the Thai side said, it was because Thai authorities had had actual possession of the temple for some period of time, due to the great difficulty of scaling the steep hillside from the Cambodian side, or simply had not understood that the map was wrong. ICJ's judgement On 15 June 1962, the court ruled 9 to 3 that the temple belonged to Cambodia and Thailand was obliged to withdraw all stationed troops there and, by a vote of 7 to 5, that Thailand must return any antiquities such as sculptures that it had removed from the temple. The Annex I map did not bind both parties because it was not the work of the Mixed Commission per the treaty. However, both parties adopted the map and the