relations between Cambodia and the United States is not very smooth because they feel that the US assistance to Cambodia, Vietnam, Thailand and Cambodia over the enemy in 2506, Sihanouk has announced not to accept aid from the United States said. US to support the Cambodian government free of enmity. Cambodia urges US to ensure the neutrality of Cambodia. Compensation for damage caused by the attack, the US and South Vietnam, then the relationship between Cambodia and the US tension until the 2513 revolution.