Thailand, which shared an 800-kilometer (500 mile) border with Kampuchea and has historically feared Vietnam's expansionism, demanded that Vietnam immediately remove its troops from Kampuchea so its people could elect a government free from foreign intervention. Indonesia, Malaysia, the Philippines and Singapore showed their support for Thailand's position. Furthermore, ASEAN viewed Vietnam's invasion and subsequent occupation of Kampuchea, which received strong Soviet support, as an intolerable threat to the region's security and stability. That view was shared by China, which went as far as accusing Vietnam of forcing Kampuchea into an Indochinese federation to serve as an outpost of Soviet global hegemony. The United States, which never maintained any form of diplomatic ties with the Khmer Rouge's Democratic Kampuchea, showed strong support for the membership of their former enemy in the UN General Assembly, and echoed ASEAN's call for an immediate withdrawal of Vietnamese military forces from Kampuchea.