With the rejuvenated nationalist movements in wait, the Europeans returned to a very different Southeast Asia after World War II. Indonesia declared independence on 17 August 1945 and subsequently fought a bitter war against the returning Dutch; the Philippines was granted independence by the United States in 1946; Burma secured their independence from Britain in 1948, and the French were driven from Indochina in 1954 after a bitterly fought war (the Indochina War) against the Vietnamese nationalists. The United Nations provided a forum for nationalism, post-independent self-definition, nation-building and the acquisition of territorial integrity for many newly independent nations.

During the Cold War, countering the threat of communism was a major theme in the decolonisation process. After suppressing the communist insurrection during the Malayan Emergency from 1948 to 1960, Britain granted independence to Malaya and later, Singapore, Sabah and Sarawak in 1957 and 1963 respectively within the framework of the Federation of Malaysia. In one of the most bloody single incidents of violence in Cold War Southeast Asia, General Suharto seized power in Indonesia in 1965 and initiated a massacre of approximately 500,000 alleged members of the Communist Party of Indonesia (PKI).

Following the independence of the Indochina states with the battle of Dien Bien Phu, North Vietnamese attempts to conquer South Vietnam resulted in the Vietnam War. The conflict spread to Laos and Cambodia and heavy intervention from the United States. By the war's end in 1975, all these countries were controlled by communist parties. After the communist victory, two wars between communist states—the Cambodian–Vietnamese War of 1975–89 and the Sino-Vietnamese War of 1979—were fought in the region. The victory of the Khmer Rouge in Cambodia resulted in the Cambodian genocide.

In 1975, Portuguese rule ended in East Timor. However, independence was short-lived as Indonesia annexed the territory soon after. However, after more than 20 years of fighting Indonesia, East Timor won its independence and was recognised by the UN in 2002. Finally, Britain ended its protectorate of the Sultanate of Brunei in 1984, marking the end of European rule in Southeast Asia.
From these paragraphs, give me a list of Southeast Asian regions that decolonised after World War II.
The Southeast Asian regions that achieved independence are: Indonesia, the Philippines, Burma, Indochina, Malaya, Singapore, Sabah, Sarawak, East Timor, and the Sultanate of Brunei.