United Malays National Organisation
The Philippines and Indonesia strenuously objected to this development, with Indonesia claiming Malaysia represented a form of neocolonialism and the Philippines claiming Sabah as its territory. The United Nations sent a commission to the region which approved the merger after having delayed the date of Malaysia's formation to investigate. Despite further protests from the Indonesian President, Sukarno, the formation of Malaysia was proclaimed on 16 September 1963. Indonesia then declared a "confrontation" with Malaysia, sending commandos to perform guerilla attacks in East Malaysia (Sabah and Sarawak). The confrontation was ended when a military coup replaced Sukarno with Suharto. The Philippines, which had withdrawn diplomatic recognition from Malaysia, also recognised Malaysia around the same time.
History of Malaysia
On 24 April 1961 Lee Kuan Yew proposed the idea of forming Malaysia during a meeting to Tunku Abdul Rahman, after which Tunku invited Lee to prepare a paper elaborating on this idea. On 9 May, Lee sent the final version of the paper to Tunku and then deputy Malayan Prime Minister Abdul Razak. There were doubts about the practicality of the idea but Lee assured the Malayan government of continued Malay political dominance in the new federation. Razak supported the idea of the new federation and worked to convince Tunku to back it. On 27 May 1961, Abdul Rahman proposed the idea of forming "Malaysia", which would consist of Brunei, Malaya, North Borneo, Sarawak, and Singapore, all except Malaya still under British rule. It was states that this would allow the central government to better control and combat communist activities, especially in Singapore. It was also feared that if Singapore became independent, it would become a base for Chinese chauvinists to threaten Malayan sovereignty. The proposed inclusion of British territories besides Singapore was intended to keep the ethnic composition of the new nation similar to that of Malaya, with the Malay and indigenous populations of the other territories cancelling out the Chinese majority in Singapore.