Indonesia-Malaysia confrontation

The Indonesian–Malaysian confrontation or Borneo confrontation (also known by its Indonesian/Malay name, Konfrontasi) was a violent conflict from 1963–66 that stemmed from Indonesiaball's opposition to the creation of  Malaysiaball. The creation of Malaysia was the amalgamation of the Federation of Malayaball (now West Malaysia),  Tringapore and the British protectorates of  North Borneoball and  Sarawakball (collectively known as British Borneo, now East Malaysia) in September 1963.[17]  Important precursors to the conflict included Indonesia's policy of confrontation against Netherlands New Guineaball from March–August 1962 and the Brunei Revolt in December 1962.

The confrontation was an undeclared war with most of the action occurring in the border area between Indonesia and East Malaysia on the island of Borneo (known as Kalimantan in Indonesia). The conflict was characterised by restrained and isolated ground combat, set within tactics of low-level brinkmanship. Combat was usually conducted by company- or platoon-sized operations on either side of the border. Indonesia's campaign of infiltrations into Borneo sought to exploit the ethnic and religious diversity in Sabah and Sarawak compared to that of Malaya and Singapore, with the intent of unraveling the proposed state of Malaysiaball.

The end result of this confrontation was a commonwealth victory, with the confrontation largely ending when Sukarno was replaced by Suharto as leader of Indonesiaball, in which they accepted the formation of  Malaysiaball, however, the insurgencies in Sarawak continued into at least 1990.

Because of the confrontation, Philippinesball almost annexed North Borneoball because it was once his clay.