Military history of Australia during the Indonesia–Malaysia confrontation Military history of Australia during the Indonesia–Malaysia confrontation The Indonesia-Malaysia confrontation () was fought from 1962 to 1966 between the British Commonwealth and Indonesia. Indonesia, under President Sukarno, sought to prevent the creation of the new Federation of Malaysia that emerged in 1963, whilst the British Commonwealth sought to safeguard the security of the new state. The war remained a limited one however, and was fought primarily on the island of Borneo, although a number of Indonesian seaborne and airborne incursions into the Malay Peninsula did occur. As part of Australia's continuing military commitment to the security of Malaysia, Australian
Brunei–Malaysia border at the 100 fathom isobath. In its 1979 territorial waters and continental shelf map, Malaysia claimed the area to be part of its continental shelf and depicted the Brunei-Malaysian border as running up to the 100 fathom isobath. Brunei did not recognise these assertions made by Malaysia. The Exchange of Letters signed on 16 March 2009 by the two countries provided for Malaysia's recognition of Brunei's territorial waters which it had earlier disputed. A joint committee is to determine the final maritime border between the two countries. See below for more on the dispute between the two countries. At its