Head of state second and last incumbent of the office, Yusof bin Ishak, kept the style at 31 August 1963 unilateral declaration of independence and after 16 September 1963 accession to Malaysia as a state (so now as a constituent part of the federation, a non-sovereign level). After its expulsion from Malaysia on 9 August 1965, Singapore became a sovereign Commonwealth republic and installed Yusof bin Ishak as its first President. In 1959 after the resignation of Vice President of Indonesia Mohammad Hatta, President Sukarno abolished the position and title of vice president, assuming the positions of Prime Minister and Head of Cabinet.
Communist insurgency in Malaysia (1968–89) the Malaysian state of Sarawak in the island of Borneo, which had been incorporated into the Federation of Malaysia on 16 September 1963. During the first Malayan Emergency (1948–1960), the MCP launched an unsuccessful insurrection against the Federation of Malaya. The independence of the Federation of Malaya on 31 August 1957 removed the major cause for the communists as the Federation had gained full autonomy from the United Kingdom. The first Malayan Emergency ended on 31 July 1960. Between 1960 and 1968, the MCP underwent a period of streamlining, retraining, and re-indoctrination of the communist ideology. The Malayan Races Liberation