Batek Island

Batek Island or Fatu Sinai is a small uninhabited island located in the Savu Sea, northwest of the island of Timor, 9.3 km off the East Timorese municipality of Oecusse. The sovereignty of the island is disputed between Indonesia and East Timor.

Etymology
The island is uninhabited, but is traditionally considered sacred by the local population on both sides of the border, even though the majority are now Christians. It is therefore referred to as Fatu Lulik (sacred mountain) or adat. Legend has it that the island came to its present position from Timor's interior. While the inhabitants of Nitibe see its origin in the East Timorese Oesilo, the people from North Amfoang assign the island's origin to the Indonesian Mount Mutis, the highest mountain in West Timor. The legends are similar because despite the border dating back to colonial times, the inhabitants of the region on both sides of the border belong to the Atoin Meto ethnic group.

Colonial period
The border treaties between Portugal and the Netherlands in 1859, 1896, 1904 and 1914 established the border between the two colonial powers' dominions on the island of Timor. Out of the four treaties, only the 1904 treaty mentions the island as Pulau Batek, where it is divided between Portuguese (Portuguese Timor) and the Dutch (Dutch East Indies). Later, Batek Island was a "forgotten island" that the colonial powers did not care about any further. After the Indonesian invasion of East Timor in 1975, the island was solely under Indonesian administration.

Dispute
East Timor is claiming the island, using a map of 1914 as reference. In 2004, Indonesian Colonel Moesanip said that this claim was abandoned when the East Timorese Minister of Foreign Affairs, José Ramos-Horta, recognized Indonesian sovereignty over the island. The Batek Island dispute between Indonesia and East Timor has largely been ended in 2005. However, East Timorese chief negotiator Xanana Gusmão indicated in 2022 that negotiations were continuing.

After the 1999 independence referendum, in which East Timor opted for a state independent of Indonesia and later placed under UN administration, Batek Island became a point of contention. In the first drafts of the Constitutional Commission of Oecussi Enclave, Batek Island was defined as part of Oe-Cusse Ambeno and thus as part of East Timorese territory, based on several consultations with the communities. However, the Constitution of East Timor did not list Batek Island as part of the national territory.

In the second half of 2002, Indonesia built a small lighthouse on Batek Island. On 14 December 2003, the Indonesian military conducted a military exercise in which a warship, helicopters and jet fighters used the island for several hours as part of the exercise. The inhabitants of Citrana, on the coast of Nitibe, felt threatened by this, especially as East Timor had not been informed of the manoeuvre beforehand. Publicly, the East Timorese government and the United Nations were reluctant to comment, and it was not until 12 January 2004 that the Australian press reported on the incident. On 16 January, Timor Leste has sent a memorandum of objection to Indonesia regarding the conduct of war exercises around Batek Island. On 5 February, Indonesian Colonel Moesanip, KOREM commander of Kupang, stated that the manoeuvre was to demonstrate Indonesian sovereignty over Batek Island and that if East Timor resisted, Indonesia would station soldiers on the island.

On 2 March 2017, President Joko Widodo designated Batek Island as part of Indonesia's 111 outermost small islands. This designation status is stated in Presidential Decree No. 6/2017 on the Designation of Outermost Small Islands.

Geography
Batek Island is located 12 km off the coast of the East Timorese administrative district of Nitibe (Oe-Cusse Ambeno municipality), at the westernmost point of the country, or of the Indonesian district (Kecamatan) of North Amfoang (Kupang regency). The nearest villages are the East Timorese village of Citrana and the Indonesian village of Oepoli.

It is 530 meters long and 420 meters wide, for an area of 13.5 hectares. Its highest point is fifty meters above sea level. The island has a plateau that rises about 50 m above the sea. Contrary to what is stated on some internet sites, Batek Island is not a coral island.