Indonesia–Malaysia confrontation 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 Indonesia's opposition to the creation of Malaysia. The creation of Malaysia was the amalgamation of the Federation of Malaya (now West Malaysia), Singapore and the crown colony/British protectorates of North Borneo and Sarawak (collectively known as British Borneo, now East Malaysia) in September 1963. Important precursors to the conflict included Indonesia's policy of confrontation against Netherlands New Guinea from March–August 1962 and the Brunei Revolt in December 1962. The confrontation was an undeclared war with most
Peninsular Malaysia Peninsular Malaysia Peninsular Malaysia also known as Malaya or West Malaysia, is the part of Malaysia which lies on the Malay Peninsula and surrounding islands. Its area is , which is nearly 40% of the total area of the country - - or slightly smaller than England and Java island. It shares a land border with Thailand in the north. To the south is the island of Singapore. Across the Strait of Malacca to the west lies the Sumatra Island (Indonesia) and across the South China Sea to the east lies the Natuna Islands (Indonesia). Peninsular Malaysia accounts for the