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 The Philippines, which had withdrawn diplomatic recognition from Malaysia, also recognised Malaysia around the same time.
Singapore in Malaysia
Singapore was one of the 14 states of Malaysia from 1963 to 1965. Malaysia was formed on 16 September 1963 as a new political entity from the merger of the Federation of Malaya with former British colonies of North Borneo, Sarawak and Singapore. This marked the end of a 144-year period of British rule in Singapore, beginning with the founding of modern Singapore by Sir Stamford Raffles in 1819.