Sihanouk's nonaligned foreign policy, which emerged in the months following the Geneva Conference, cannot be understood without reference to Cambodia's past history of foreign subjugation and its very uncertain prospects for survival as the war between North Vietnam and South Vietnam intensified. Soon after the 1954 Geneva Conference, Sihanouk expressed some interest in integrating Cambodia into the framework of the Southeast Asia Treaty Organization (SEATO), which included Cambodia, Laos, and South Vietnam within the "treaty area," although none of these states was a signatory. But meetings in late 1954 with India's Prime Minister Jawaharlal Nehru and Burma's Premier U Nu made him receptive to the appeal of nonalignment. Moreover, the prince was somewhat uneasy about a United States-dominated alliance that included one old enemy, Thailand, and encompassed another, South Vietnam, each of which offered sanctuary to anti-Sihanouk dissidents.

At the Bandung Conference in April 1955, Sihanouk held private meetings with Premier Zhou Enlai of China and Foreign Minister Pham Van Dong of North Vietnam. Both assured him that their countries would respect Cambodia's independence and territorial integrity. His experience with the French, first as a client, then as the self-proclaimed leader of the "royal crusade for independence," apparently led him to conclude that the United States, like France, would eventually be forced to leave Southeast Asia. From this perspective, the Western presence in Indochina was only a temporary interruption of the dynamics of the region--continued Vietnamese (and perhaps even Thai) expansion at Cambodia's expense. Accommodation with North Vietnam and friendly ties with China during the late 1950s and the 1960s were tactics designed to counteract these dynamics. China accepted Sihanouk's overtures and became a valuable counterweight to growing Vietnamese and Thai pressure on Cambodia.

Cambodia's relations with China were based on mutual interests. Sihanouk hoped that China would restrain the Vietnamese and the Thai from acting to Cambodia's detriment. The Chinese, in turn, viewed Cambodia's nonalignment as vital in order to prevent the encirclement of their country by the United States and its allies. When Premier Zhou Enlai visited Phnom Penh in 1956, he asked the country's Chinese minority, numbering about 300,000, to cooperate in Cambodia's development, to stay out of politics, and to consider adopting Cambodian citizenship. This gesture helped to resolve a sensitive issue--the loyalty of Cambodian Chinese--that had troubled the relationship between Phnom Penh and Beijing. In 1960 the two countries signed a Treaty of Friendship and Nonaggression. After the Sino-Soviet rift Sihanouk's ardent friendship with China contributed to generally cooler ties with Moscow.

China was not the only large power to which Sihanouk looked for patronage, however. Cambodia's quest for security and nation- building assistance impelled the prince to search beyond Asia and to accept help from all donors as long as there was no impingement upon his country's sove 2000 ereignty. With this end in mind, Sihanouk turned to the United States in 1955 and negotiated a military aid agreement that secured funds and equipment for the Royal Khmer Armed Forces (Forces Armées Royales Khmères--FARK--see Appendix B). A United States Military Assistance Advisory Group (MAAG) was established in Phnom Penh to supervise the delivery and the use of equipment that began to arrive from the United States. By the early 1960s, aid from Washington constituted 30 percent of Cambodia's defense budget and 14 percent of total budget inflows (see The First Indochina War, 1945-54, ch. 5).

Relations with the United States, however, proved to be stormy. United States officials both in Washington and in Phnom Penh frequently underestimated the prince and considered him to be an erratic figure with minimal understanding of the threat posed by Asian communism. Sihanouk easily reciprocated this mistrust because several developments aroused his suspicion of United States intentions toward his country.

One of these developments was the growing United States influence within the Cambodian armed forces. The processing of equipment deliveries and the training of Cambodian personnel had forged close ties between United States military advisers and their Cambodian counterparts. Military officers of both nations also shared apprehensions about the spread of communism in Southeast Asia. Sihanouk considered FARK to be Washington's most powerful constituency in his country. The prince also feared that a number of high-ranking, rightist FARK officers led by Lon Nol were becoming too powerful and that, by association with these officers, United States influence in Cambodia was becoming too deeply rooted.

A second development included the repetition of overflights by United States and South Vietnamese military aircraft within Cambodian airspace and border incursions by South Vietnamese troops in hot pursuit of Viet Cong insurgents who crossed into Cambodian territory when military pressure upon them became too sustained. As the early 1960s wore on, this increasingly sensitive issue contributed to the deterioration of relations between Phnom Penh and Washington.

A third development was Sihanouk's own belief that he had been targeted by United States intelligence agencies for replacement by a more pro-Western leader. Evidence to support this suspicion came to light in 1959 when the government discovered a plot to overthrow Sihanouk. The conspiracy involved several Khmer leaders suspected of American connections. Among them were Sam Sary, a leader of right-wing Khmer Serei troops in South Vietnam Son Ngoc Thanh, the early nationalist leader once exiled into Thailand and Dap Chhuon, the military governor of Siemreab Province. Another alleged plot involved Dap Chuon's establishment of a "free" state that would have included Siemreab Province and Kampong Thum (Kampong Thom) Province and the southern areas of Laos that were controlled by the rightist Laotian prince, Boun Oum.

These developments, magnified by Sihanouk's abiding suspicions, eventually undermined Phnom Penh's relations with Washington. In November 1963, the prince charged that the United States was continuing to support the subversive activities of the Khmer Serei in Thailand and in South Vietnam, and he announced the immediate termination of Washington's aid program to Cambodia. Relations continued to deteriorate, and the final break came in May 1965 amid increasing indications of airspace violations by South Vietnamese and by United States aircraft and of ground fighting between Army of the Republic of Vietnam (ARVN) troops and Viet Cong insurgents in the Cambodian border areas.

In the meantime, Cambodia's relations with North Vietnam and with South Vietnam, as well as the rupture with Washington, reflected Sihanouk's efforts to adjust to geopolitical realities in Southeast Asia and to keep his country out of the escalating conflict in neighboring South Vietnam. In the early to mid-1960s, this effort required a tilt toward Hanoi because the government in Saigon tottered on the brink of anarchy. In the cities, the administration of Ngo Dinh Diem and the military regimes that succeeded it had become increasingly ineffectual and unstable, while in the countryside the government forces were steadily losing ground to the Hanoi-backed insurgents. To observers in Phnom Penh, South Vietnam's short-term viability was seriously in doubt, and this compelled a new tack in Cambodian foreign policy. First, Cambodia severed diplomatic ties with Saigon in August 1963. The following March, Sihanouk announced plans to establish diplomatic relations with North Vietnam and to negotiate a border settlement directly with Hanoi. These plans were not implemented quickly, however, because the North Vietnamese told the prince that any problem concerning Cambodia's border with South Vietnam would have to be negotiated directly with the National Front for the Liberation of South Vietnam (NFLSVN--see Appendix B). Cambodia opened border talks with the front in mid-1966, and the latter recognized the inviolability of Cambodia's borders a year later. North Vietnam quickly followed suit. Cambodia was the first foreign government to recognize the NFLSVN's Provisional Revolutionary Government after it was established in June 1969. Sihanouk was the only foreign head of state to attend the funeral of Ho Chi Minh, North Vietnam's deceased leader, in Hanoi three months later.

In the late 1960s, while preserving relations with China and with North Vietnam, Sihanouk sought to restore a measure of equilibrium by improving Cambodia's ties with the West. This shift in course by the prince represented another adjustment to prevailing conditions in Southeast Asia. North Vietnamese and Viet Cong forces were increasing their use of sanctuaries in Cambodia, which also served as the southern terminus of the Ho Chi Minh Trail, their logistical resupply route originating in North Vietnam. Cambodian neutrality in the conflict thus was eroding, and China, preoccupied with its Cultural Revolution, did not intercede with Hanoi. On Cambodia's eastern border, South Vietnam, surprisingly, had not collapsed, even in the face of the communist Tet Offensive in 1968, and President Nguyen Van Thieu's government was bringing a measure of stability to the war-ravaged country. As the government in Phnom Penh began to feel keenly the loss of economic and military aid from the United States, which had totaled about US$400 million between 1955 and 1963, it began to have second thoughts about the rupture with Washington. The unavailability of American equipment and spare parts was exacerbated by the poor quality and the small numbers of Soviet, Chinese, and French substitutes.

In late 1967 and in early 1968, Sihanouk signaled that he would raise no objection to hot pursuit of communist forces by South Vietnamese or by United States troops into Cambodian territory. Washington, in the meantime, accepted the recommendation of the United States Military Assistance Command--Vietnam (MACV) and, beginning in March 1969, ordered a series of airstrikes (dubbed the Menu series) against Cambodian sanctuaries used by the North Vietnamese and the Viet Cong. Whether or not these bombing missions were authorized aroused considerable controversy, and assertions by the Nixon administration that Sihanouk had "allowed" or even "encouraged" them were disputed by critics such as British journalist William Shawcross. On a diplomatic level, however, the Menu airstrikes did not impede bilateral relations from moving forward. In April 1969, Nixon sent a note to the prince affirming that the United States recognized and respected "the sovereignty, neutrality and territorial integrity of the Kingdom of Cambodia with its present frontiers." Shortly thereafter, in June 1969, full diplomatic relations were restored between Phnom Penh and Washington.

Data as of December 1987