Indonesia–Malaysia confrontation become self-governing in 1959). In May 1961, the UK and Malayan governments proposed a larger federation called Malaysia, encompassing the states of Malaya, North Borneo, Sarawak, Brunei, and Singapore. Initially, Indonesia was mildly supportive of the proposed Malaysia, although the PKI (Partai Komunis Indonesia — Indonesian Communist Party) was strongly opposed to it. In Brunei, it was unclear whether the Sultan Omar Ali Saifuddien III would support Brunei joining the proposed Malaysian state because of the implied reduction of his political office, and Brunei's oil revenues ensured Brunei's financial viability were it to choose independence. Furthermore, a Brunei politician, Dr.
Brunei–Malaysia border Malaysian press reports, saying the Limbang Question was never discussed during negotiations for the Exchange of Letters. Malaysia subsequently said the Limbang Question will be settled once the survey and demarcation of the boundary between the two countries is completed. Finally on 2009, with the report from Brunei media, they announced an end to claim over each other's land, and said to resolve issues related to their maritime borders. In terms of boundary delimitation in general, the Letters of Exchange provided for the ending of the dispute by virtue of Brunei agreeing to affirm the five historical border agreements. For