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 The Philippines, which had withdrawn diplomatic recognition from Malaysia, also recognised Malaysia around the same time.
Malaysia Agreement
The Malayan Union was established by the British Malaya and comprised the Federated Malay States of Perak, Selangor, Negeri Sembilan, Pahang; the Unfederated Malay States of Kedah, Perlis, Kelantan, Terengganu, Johor; and the Straits Settlements of Penang and Malacca. It came into being in 1946, through a series of agreements between the United Kingdom and Malayan Union. The Malayan Union was superseded by the Federation of Malaya on 1 February 1948, and achieved independence within the Commonwealth of Nations on 31 August 1957.