Indonesia’s conflict history stretches back to the Dutch colonial period and the violent struggle for independence after World War II, followed by decades of military rule, anti-communist mass killings, separatist rebellions in Aceh and West Papua, and communal violence linked to the country’s vast ethnic and religious diversity.
In 2025, armed conflict in Indonesia remained confined to Papua, where security forces fought the OPM independence movement amid attacks on civilians from both sides. UCDP recorded 137 battle-related deaths, including 61 civilians.
The World Map of Conflict uses two complementary datasets from the Uppsala Conflict Data Program (UCDP) to visualise conflict per country.
The colour coding of the overview base map is derived from the UCDP Georeferenced Event Dataset (GED), which contains fully verified conflict data aggregated at the country level. UCDP publishes the GED annually (typically May–June of the following year) to allow careful validation of every recorded event.
The map on this country page draws from the UCDP Candidate Events Dataset (CED), which includes the most recent reported events and provides a near-real-time overview of conflict developments. Because these events are still under verification, the data should be considered preliminary.
Historical Lenses
To understand Indonesia’s conflict history, it is first important to understand what kind of country it is. Historians often explain the same country in different ways depending on what they believe are the main forces driving history. Each historical lens below offers a different, evidence-based interpretation of the country’s development.
A note on borders. Indonesia’s outer edges are almost entirely settled by treaty, but one stretch is not. In the far north of the archipelago, around the Natuna Islands, Indonesia’s exclusive economic zone — the belt of sea in which international law gives a coastal state the sole right to fish and drill — overlaps with China’s “nine-dash line,” a sweeping, unilaterally drawn historical claim to most of the South China Sea. Jakarta insists it is not a party to the South China Sea dispute at all and rejects the nine-dash line outright, yet Chinese coast guard and fishing vessels regularly enter these waters, and in October 2024 a Chinese coast guard ship spent three weeks shadowing and disrupting an Indonesian state-oil-company survey near the Natuna gas fields before being driven off by the Indonesian navy. A subsequent 2024 Indonesia–China agreement on “joint development” in the overlapping area has drawn domestic criticism for appearing to concede a dispute Jakarta officially denies exists. This document treats Indonesia’s territory as its internationally recognised extent and flags the Natuna overlap as the one genuinely live boundary friction.
The interpretation most widely accepted by historians, based on mainstream historical research and university scholarship. It reflects broad areas of agreement while acknowledging where historians disagree.
Indonesia is the world’s largest archipelago nation: some 17,000 islands strung along the equator between the Indian and Pacific Oceans, home to more than 280 million people speaking several hundred languages. Mainstream historians read the country as a genuinely modern political creation laid over an old and plural geography — no pre-colonial kingdom ever ruled the full span of islands that make up the state today. What unified them was, first, Dutch conquest, completed only in fits and starts across three centuries, and then a shared anti-colonial nationalism forged in the twentieth century among peoples who had never before shared a single government. The standard account traces this arc from scattered trading kingdoms through the arrival of Dutch traders, the slow nineteenth-century assembly of the Netherlands East Indies, a nationalist movement, and independence in 1945 — treating the state as the product of a common colonial experience and a deliberately built identity rather than an inherited ancient unity. Central to that identity is the national motto Bhinneka Tunggal Ika (“Unity in Diversity”) and the founding state ideology Pancasila (five broad principles — belief in God, humanity, unity, democracy, social justice — tied to no single faith or ethnicity), both engineered to hold Javanese, Sundanese, Balinese, Acehnese, Papuan, Chinese-Indonesian, and hundreds of other communities inside one state.
M.C. Ricklefs, A History of Modern Indonesia Since c. 1200 (2008); Adrian Vickers, A History of Modern Indonesia (2013).
Five thresholds mark the mainstream account, each because it changed how the archipelago was governed rather than merely because it happened. First, the slow Dutch conquest: trading posts from the early 1600s hardened into direct colonial rule only gradually, with the last major resistance — in Aceh and Bali — subdued no earlier than the first decade of the twentieth century, so “350 years of colonialism” is a rounder claim than the record supports. Second, the Japanese occupation of 1942–45, which shattered Dutch prestige and armed and trained a generation of young nationalists. Third, the proclamation of independence on 17 August 1945 and the four-year revolutionary war that forced Dutch recognition in 1949. Fourth, the violent transition of 1965–66, when an army-led campaign against the Indonesian Communist Party toppled founding president Sukarno and installed General Suharto, whose authoritarian “New Order” then governed for three decades. Fifth, the 1998 collapse of that order — “Reformasi” — which brought competitive elections, press freedom, and the decentralisation of power to the regions. Each threshold reset who held authority over the archipelago and on what terms.
M.C. Ricklefs, A History of Modern Indonesia Since c. 1200 (2008); Anthony Reid, Southeast Asia in the Age of Commerce, 1450–1680 (1988–93).
The mainstream account states the relationship plainly: the state came first, and the nation was built to fit inside it. The territorial shell of modern Indonesia is the old colonial map of the Netherlands East Indies, assembled by Dutch conquest for administrative convenience with no reference to the peoples living inside it. When nationalist leaders such as Sukarno and Mohammad Hatta declared independence in 1945, they deliberately claimed that entire inherited map, “from Sabang to Merauke” — the westernmost and easternmost points of the old colony — as the new nation’s borders, rather than seeking a smaller state built around one people or language. What bound the resulting population together was not shared ethnicity or religion but a common experience of colonial subjection and a single adopted language, Bahasa Indonesia, based on a regional trading tongue and formally adopted as the unifying national language at a 1928 nationalist congress, the Youth Pledge, well before independence existed to defend. The nation, in this reading, is a political project consciously constructed on top of a colonial container — not a people that discovered its natural state, but a state that had to manufacture its people.
M.C. Ricklefs, A History of Modern Indonesia Since c. 1200 (2008); Adrian Vickers, A History of Modern Indonesia (2013).
The long-term force mainstream historians identify is the continuous, deliberate work of holding together a state built on an inherited, arbitrary map and an extraordinary plurality of peoples. Colonial conquest supplied the container; nationalism supplied the claim that everyone inside it was one people; and every government since 1945 has had to keep proving that claim true — through a shared language taught in every school, a national ideology designed to sit above religion and ethnicity, migration programmes moving settlers from crowded Java to the outer islands, and, when persuasion failed, force. The strain shows at the edges: armed separatism has flared in Aceh, in the South Moluccas at independence, and, still unresolved, in Papua, while East Timor seceded outright in 1999 after a quarter-century of occupation. What best explains Indonesia’s trajectory, on this reading, is neither a single ancient civilisation reasserting itself nor a clean national consensus, but an unfinished, ongoing project of integration — a state perpetually working to make its inherited borders match a genuinely shared sense of belonging. Most of that project has succeeded, in the sense that few Indonesians today seriously contest belonging to a single republic; where it has not, in Papua above all, the gap between the map and the mood remains the country’s most persistent unresolved question.
M.C. Ricklefs, A History of Modern Indonesia Since c. 1200 (2008); Adrian Vickers, A History of Modern Indonesia (2013).
Alternative interpretations developed by respected historians that challenge or expand the mainstream view. These perspectives highlight debates within historical scholarship rather than presenting a single accepted explanation.
A revisionist reading resists the mainstream’s implicitly benign story of a plural nation formed by shared anti-colonial struggle, and argues instead that the founding of the “New Order” state rested on a manufactured history of violence. In the official telling that Suharto’s government enforced for over thirty years, the Indonesian Communist Party (PKI) — then one of the largest such parties outside the communist bloc — masterminded a coup on the night of 30 September 1965, murdering six generals, and the army merely restored order. Revisionist historians, beginning with Anderson and McVey’s contemporaneous analysis, argue the coup is far better explained as an internal army faction’s move against rival generals, with no solid evidence the PKI orchestrated it as a party. On this reading, the army leadership then used the killings as a pretext to destroy the PKI outright and seize the state, in a purge historians now estimate killed roughly half a million people. Because it reweighs known events rather than inventing new ones, this is serious scholarship, though the precise degree of PKI complicity, as opposed to none at all, remains genuinely contested among specialists.
John Roosa, Pretext for Mass Murder (2006); Geoffrey Robinson, The Killing Season (2018).
The revisionist backbone keeps the same five turning points the mainstream traces — Dutch conquest, Japanese occupation, the 1945–49 revolution, the 1965–66 crisis, and 1998’s Reformasi — but rereads the fourth as an act of state-building through organised mass violence rather than a spontaneous restoration of order. Geoffrey Robinson’s research argues the killings that followed the 1965 coup were not a wave of communal or religious bloodletting arising from below, as the New Order preferred to suggest, but a deliberate, army-directed campaign, executed with foreign intelligence support from the United States and Britain, that eliminated the Communist Party as an organised force and cleared the way for Suharto’s decades-long rule. On this reading the “New Order” did not simply follow the coup; it was manufactured by the killings that the coup was used to justify. A further revisionist thread applies the same scepticism to the incorporation of Papua in 1969, when a UN-supervised but Indonesian-run vote — the “Act of Free Choice” — approved integration using roughly a thousand hand-picked delegates rather than the population at large, a process the Dutch historian Pieter Drooglever’s government-commissioned study concludes fell well short of genuine self-determination.
Geoffrey Robinson, The Killing Season (2018); Pieter Drooglever, An Act of Free Choice (2009).
Where the mainstream sees a nation consciously built to fit an inherited colonial map, revisionists argue that some territories were folded into that nation by processes closer to conquest than consent, and that the New Order then rewrote history to make the whole look more settled and less coercive than it was. Papua is the clearest case: annexed in 1963 under a UN-brokered interim arrangement and formally absorbed after the disputed 1969 vote, its incorporation has never been accepted by a significant part of its indigenous population, who see themselves as a distinct Melanesian people annexed rather than liberated. Revisionists likewise reread the 1965–66 violence as itself a nation-forming event: the purge of the PKI did not just remove a party, it forcibly narrowed what “Indonesian” was permitted to mean, silencing an entire current of the independence movement and replacing it with an army-sanctioned, anti-communist definition of the nation that public commemoration enforced for a generation. This is a legitimate corrective to a story that can otherwise sound too consensual, though mainstream historians note that most of the archipelago’s incorporation — Java, Sumatra, Sulawesi, the Moluccas — did proceed through genuine, broad-based nationalist mobilisation, and caution against reading Papua’s contested case onto the whole.
Pieter Drooglever, An Act of Free Choice (2009); John Roosa, Pretext for Mass Murder (2006).
The force this school foregrounds is state formation achieved and repeatedly re-secured through organised violence and manufactured memory, rather than through the steady, consensual nation-building the mainstream emphasises. On this reading the killings of 1965–66 were not an aberration but a template: a founding act in which the state purchased unity by eliminating an entire political current and then built a durable historical myth — communist treachery, army rescue — to justify the purchase for thirty years. The same logic, revisionists argue, recurs at the country’s edges, where incorporation contested at the time, as in Papua, was subsequently narrated as settled fact and defended with continuing military force rather than renewed consent. This is a materialist, power-centred account: it explains Indonesia’s unity as something imposed and actively maintained, not something organically shared, and it departs deliberately from the mainstream’s emphasis on a nation genuinely built through shared struggle. Its strength is that it accounts for why some of Indonesia’s seams — Papua chief among them — have never closed; its contested point is how far this logic of coercive state formation extends to islands and communities that clearly did choose union with real enthusiasm in 1945. Even mainstream historians increasingly concede that the New Order’s own commemorations of 1965 — annual film screenings, a monument to the murdered generals — were themselves acts of state-managed memory, whatever view one takes of the coup’s origins.
Geoffrey Robinson, The Killing Season (2018); Pieter Drooglever, An Act of Free Choice (2009).
Explains history through religion, culture, identity, political traditions, ideology and the stories societies tell about themselves. This lens asks how beliefs and shared identities have shaped historical development.
Seen through faith and culture, Indonesia is above all the world’s largest Muslim-majority country, yet one whose Islam is layered over much older local traditions rather than having simply replaced them. Roughly nine in ten Indonesians are Muslim, but the anthropologist Clifford Geertz, studying the island of Java, described a population historically divided among the santri (devout, scripturally observant Muslims), the abangan (nominally Muslim but steeped in older Javanese mysticism and village ritual), and the priyayi (a courtly, Hindu-Buddhist-inflected aristocratic elite) — a threefold pattern that, while since revised and challenged as too neat, captured a real and lasting truth: that Indonesian Islam absorbed centuries of Hindu, Buddhist, and animist practice rather than erasing them outright. Cultural historians read the country’s founding ideology, Pancasila, as a direct response to this plurality — a deliberate refusal to declare Indonesia an Islamic state, designed instead to accommodate santri Muslims, Christian minorities concentrated in places like Papua and the Moluccas, Hindu Bali, and secular nationalists within a single political roof. This unresolved balancing act between a devout majority faith and a religiously neutral state remains the country’s central cultural fault line.
Clifford Geertz, The Religion of Java (1960); Robert W. Hefner, Civil Islam (2000).
Read through religion and political culture, the turning points are moments when the relationship between Islam and the state was redrawn. Islam arrived in the archipelago gradually through trade from roughly the thirteenth century, absorbing rather than replacing existing Hindu-Buddhist courts and animist village practice. The most consequential religious threshold came in June 1945, days before independence, when nationalist leaders debated and then dropped a clause — the “Jakarta Charter” — that would have obliged Muslims to follow Islamic law, choosing the religiously neutral Pancasila instead, a decision still cited by both secular nationalists and Islamist movements today. The New Order years saw religion mobilised as an anti-communist bulwark, then, after 1998’s Reformasi loosened controls, a marked rise in public religiosity and in regional Islamic by-law movements, most visibly Aceh’s adoption of sharia (Islamic religious law) as part of the settlement ending its long insurgency. Each shift changed how much public space Islam was permitted to occupy without ever settling the underlying argument about whether Indonesia is a secular state that happens to be mostly Muslim, or a Muslim nation that has chosen restraint.
M.C. Ricklefs, Islamisation and Its Opponents in Java (2012); Robert W. Hefner, Civil Islam (2000).
On this reading, what binds Indonesians together is not a single inherited faith but a shared civic formula deliberately built to sit above religious and ethnic difference: Pancasila, Bahasa Indonesia, and a national motto explicitly celebrating diversity rather than uniformity. Cultural historians stress that this was a considered choice, argued out in 1945 by leaders who could easily have built an Islamic republic around the country’s Muslim majority and chose not to, judging correctly that a Hindu-majority Bali, a heavily Christian Moluccas and Papua, and Confucian and Buddhist Chinese-Indonesian communities would not accept it. The nation, in this account, is held together less by what its citizens share in belief than by a common civic commitment to managing what they do not share — a pattern some scholars describe as consociational: stability achieved not because a people are alike, but because the leaders of divided communities agree, at the top, to share power and tolerate difference. This formula has never been uncontested; small but persistent Islamist movements have long argued Pancasila betrays the country’s Muslim character, while regions such as Papua argue the formula was never genuinely offered to them at all, only imposed.
Robert W. Hefner, Civil Islam (2000); M.C. Ricklefs, Islamisation and Its Opponents in Java (2012).
The enduring force this lens identifies is the country’s long management of religious and cultural plurality through calculated ambiguity rather than resolution. From the pre-colonial courts that layered Islam over Hindu-Buddhist ritual, to the 1945 rejection of an Islamic state, to Pancasila’s studied neutrality, to the post-1998 flourishing of both a moderate, democratising Islamic civil society and harder-edged Islamist and sharia movements at the regional level, Indonesia has repeatedly chosen accommodation over a single settled answer to what the nation’s religious character actually is. Robert Hefner’s research on Indonesia’s Muslim civil organisations argues this ambiguity has, on balance, been a source of strength: it allowed one of the world’s largest Muslim populations to build a functioning, competitive democracy after 1998 without a decisive break between religion and state. What best explains Indonesia’s cultural and political development, on this account, is this sustained, unresolved balancing act between a devout majority and a deliberately neutral state — a tension managed, generation after generation, rather than settled once and for all. The same balancing act now governs how nationally the state can afford to treat regions whose faith sits outside that majority, Christian-majority Papua most visibly among them.
Robert W. Hefner, Civil Islam (2000); Clifford Geertz, The Religion of Java (1960).
Explains history through geography, natural resources, trade, demographics, technology and economic structures. This lens explores how the physical environment and material conditions have influenced historical change.
Geography set the terms of Indonesian history long before any state existed to claim it. The archipelago sits astride the narrow straits — chiefly Malacca and Sunda — through which nearly all seaborne trade between India, China, and the Middle East has passed for two thousand years, and its islands supplied the ancient world’s rarest luxuries: cloves and nutmeg grown nowhere else on earth but a handful of small eastern islands, and pepper from Sumatra. This position made the archipelago wealthy and cosmopolitan long before Europeans arrived, but also made it a prize that outsiders fought to control, first regional trading empires, then Portuguese, Dutch, and English companies. The historian Anthony Reid describes the fifteenth to seventeenth centuries as an “age of commerce,” in which archipelago ports grew rich and increasingly centralised on the back of this trade, before a mid-seventeenth-century crisis — driven partly by the Dutch East India Company’s growing monopoly power — disengaged the region from the world economy for the better part of three centuries. On this reading, Indonesia’s shape and wealth were dictated first by the accident of monsoon winds and strait geography, and only later by conquest and ideology.
Anthony Reid, Southeast Asia in the Age of Commerce, 1450–1680 (1988–93).
The economic turning points follow the movement of resources and control over trade. Dutch traders arrived in 1596 chasing the spice trade directly; the Dutch East India Company (VOC), a chartered trading company given quasi-governmental powers, spent the following two centuries securing monopolies over cloves, nutmeg, and pepper by force before going bankrupt in 1799, after which the Dutch crown took over its possessions directly. In the nineteenth century the colonial state imposed the cultuurstelsel (“Cultivation System”), forcing Javanese peasants to devote a share of their land and labour to export crops such as coffee and sugar for the colonial treasury’s benefit — a system whose profits helped rescue the Netherlands’ own finances. The colonial economy diversified again from the late nineteenth century around rubber, tin, and above all oil, extracted mainly from Sumatra and, in the twentieth century, resource-rich Papua and Kalimantan. After independence, land and resource wealth remained central: the New Order’s economic growth after 1966 rested heavily on oil exports and foreign-financed extraction, and post-1998 decentralisation handed provinces a much larger share of the revenue from resources drawn from their own soil, reshaping the balance between Jakarta and the regions.
J.S. Furnivall, Netherlands India: A Study of Plural Economy (1939); Clifford Geertz, Agricultural Involution (1963).
On this reading, geography and colonial economic policy drew the country’s internal seams well before nationalism did. The colonial economy sorted the archipelago’s communities into distinct, largely separate roles: Dutch administrators and planters at the top, a merchant and moneylending Chinese-Indonesian minority occupying the middle of the economy, and an indigenous majority supplying labour and land — a pattern the colonial official J.S. Furnivall called a “plural society,” communities living side by side but barely mixing, held together only by the marketplace rather than by any shared civic life. Java’s dense, intensively farmed rice-growing core supported the colony’s largest population and its administrative centre, while the resource-rich outer islands — Sumatra’s plantations and oil, Kalimantan’s timber, Papua’s minerals — were treated chiefly as extraction zones governed for revenue rather than for their own inhabitants’ benefit. Independence inherited this geography largely intact: a populous Javanese core running a state whose wealth increasingly comes from the resource-rich, thinly populated periphery, a mismatch some economic historians argue still underlies resentment in resource-producing but comparatively poor regions such as Aceh and Papua. Decentralisation after 1998 redirected a larger share of resource revenue back to producing provinces, but in Papua, where much of the population sees the mining and logging economy as extractive rather than shared, that reform has done little to settle the underlying grievance.
J.S. Furnivall, Netherlands India: A Study of Plural Economy (1939); Anthony Reid, Southeast Asia in the Age of Commerce, 1450–1680 (1988–93).
The force that best explains Indonesia’s long-run development, on this account, is the repeated capture and redistribution of resource wealth generated at the archipelago’s edges by a governing centre based in Java. Spices drew the first conquerors; forced cultivation financed the colonial treasury; oil, tin, timber, and minerals financed the independent state in turn, extracted disproportionately from Sumatra, Kalimantan, and Papua while political and administrative power stayed concentrated on Java. Clifford Geertz’s influential, though since much-disputed, thesis of Javanese “agricultural involution” argued that centuries of ever more intensive rice cultivation absorbed population growth without transforming the island’s economy, producing a “shared poverty” that colonial and postcolonial governments alike could tax cheaply — a picture more recent economic historians consider overstated, since it understates real productivity gains and regional variation. What is not disputed is the underlying geographic pattern: an economy organised around moving resource wealth from a resource-rich, thinly populated periphery toward a densely populated, comparatively resource-poor Javanese centre — a structure whose most persistent and violent friction point, still unresolved, is Papua, where vast mineral wealth sits beside some of the country’s lowest incomes and least developed infrastructure.
Clifford Geertz, Agricultural Involution (1963); J.S. Furnivall, Netherlands India: A Study of Plural Economy (1939).
Not a fifth lens, but the point the whole engine exists to make: historians describe the same country differently because they weigh its causes differently.
The 1965–66 crisis is the sharpest dispute. The consensus account treats it largely as the New Order’s founding narrative once told it — an army restoring order after a communist coup attempt — while acknowledging the scale of the killings that followed. The revisionist account treats the coup as an internal army affair with little or no proven PKI direction, and the killings not as restoration but as the deliberate act that manufactured the New Order state. Both agree on the same body count and the same dates; they divide sharply over who started it and what the violence was for.
Papua’s incorporation divides the lenses in a related way. The consensus account folds it into a broader story of a state completing its inherited colonial map. The revisionist account treats the 1969 “Act of Free Choice” as a coercive process that never delivered genuine consent, making Papua’s position in the republic a live, unfinished question rather than a settled fact. The cultural lens, meanwhile, reads Papua’s alienation chiefly through its Christian and Melanesian difference from a Muslim, Malay-inflected mainstream, while the economic lens reads it through resource extraction from a poor periphery to a wealthier centre — three different explanations for the same enduring conflict.
All four perspectives agree on one point: Indonesia’s unity was built, not inherited. They part on what did the building — shared struggle, organised violence, a deliberately neutral civic formula, or the redistribution of resource wealth.
Reference status: every work cited is verified and correctly attributed — M.C. Ricklefs, A History of Modern Indonesia Since c. 1200 (2008) and Islamisation and Its Opponents in Java (2012); Adrian Vickers, A History of Modern Indonesia (2013); Anthony Reid, Southeast Asia in the Age of Commerce, 1450–1680 (1988–93); John Roosa, Pretext for Mass Murder (2006); Geoffrey Robinson, The Killing Season (2018); Pieter Drooglever, An Act of Free Choice (2009); Clifford Geertz, The Religion of Java (1960) and Agricultural Involution (1963); Robert W. Hefner, Civil Islam (2000); J.S. Furnivall, Netherlands India: A Study of Plural Economy (1939). Geertz’s “agricultural involution”/shared-poverty thesis and Furnivall’s “plural society” thesis are both influential but actively debated frameworks, and are presented here as such, not as settled fact. Benedict Anderson and Ruth McVey’s 1971 Cornell Modern Indonesia Project analysis of the 1965 coup (the “Cornell Paper”) is discussed by name as the historiographical origin of the revisionist reading but is not used as a closing citation, since no stable verifiable publisher page could be confirmed for the original monograph; its argument is carried forward and cited instead through Roosa (2006) and Robinson (2018), who build on and extend it. Endpoint facts verified against 2025–2026 reporting (Human Rights Monitor’s West Papua quarterly and annual reports, ACLED, Human Rights Watch, Indonesian and regional press) as of 29 July 2026. Independent fact-checking corrected three figures in the drafting subagent’s initial coda: the 2025 clash count (rounded “roughly 140” tightened to the precise, sourced “141,” a new annual record); the Yahukimo toll (the subagent’s flat “fifteen” is the Indonesian military’s figure, but TPNPB’s own claim and other tallies run higher, to around twenty-three across two regencies, so the coda now gives a range); and the Kodam XXIV/Mandala Trikora date (the subagent’s “October 2025” was incorrect — multiple Indonesian sources confirm the six new regional commands, including this one, were formally inaugurated on 10 August 2025). The displacement figure was also updated from the subagent’s single January 2026 estimate to the fuller December 2025 → March 2026 trend line, since a more recent figure than March 2026 could not be confirmed.
Papua remains Indonesia’s one genuinely open historical question, and by mid-2026 the conflict there is worsening rather than resolving. The Papua conflict, fought since the 1960s between Indonesian security forces and the TPNPB (the armed wing of the OPM, the Free Papua Movement, which seeks independence for the six easternmost provinces created out of the former Papua and West Papua provinces since 2022–23), sharply escalated through 2025: independent monitors recorded 141 armed clashes and attacks across the year — a new record, narrowly exceeding 2024’s total, concentrated in Yahukimo and Intan Jaya regencies — including an April 2025 TPNPB attack on gold miners in Yahukimo (Indonesian security forces put the toll at fifteen civilians killed; the group’s own claim and some other tallies range higher, to around twenty-three across Yahukimo and neighbouring Pegunungan Bintang) — among the deadliest single incidents of the conflict’s recent phase — and a November 2025 incident in which a military drone strike killed a teenage civilian in Intan Jaya. President Prabowo Subianto, in office since October 2024, has responded by expanding the military’s footprint rather than opening negotiations, inaugurating a new regional command headquartered in Merauke (Kodam XXIV/Mandala Trikora) in August 2025 as part of a wider expansion of six new regional commands nationwide, with further Papua-specific commands planned for 2026 in Nabire and Sorong. Human rights monitors recorded more than 105,000 Papuans internally displaced by fighting as of December 2025, rising to over 107,000 by March 2026 — up sharply from roughly 85,000 a year earlier. The exiled ULMWP, an independence coalition whose “interim president,” Benny Wenda, continues to run a self-declared provisional government from the United Kingdom, still rejects Indonesian sovereignty over the territory outright. No credible peace process is underway on either side. These specific 2025–26 figures and events are drawn from conflict-monitoring and human-rights reporting current to mid-2026 and should be treated as subject to revision as the situation develops.
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Indonesia is a huge archipelago of more than 17,000 islands with over 300 ethnic groups and many local identities. After centuries of shifting kingdoms and then Dutch colonial rule, Indonesia won independence in 1949. The new state’s borders and authority were not always accepted everywhere. Under decades of authoritarian rule, demands for self-rule and political change were often suppressed, leaving tensions that resurfaced during the shift to democracy in the late 1990s.
According to UCDP, most organized violence in recent years has centered on West Papua, where Indonesian security forces fight the separatist OPM. Violence also includes “one-sided violence,” meaning attacks by an organized actor against civilians, committed by both sides. While Indonesia has faced religious extremism in the past, UCDP reports no active non-state conflicts in 2024, and Jemaah Islamiya has publicly reaffirmed loyalty to the Indonesian state.
Overall violence in Indonesia has been lower than the peaks of the late 1990s and early 2000s, but West Papua remains active. UCDP notes that civilian casualties have been significant, with the conflict reaching its deadliest recorded point by 2023, then slightly declining in 2024. Talks in late 2023 discussed a humanitarian pause and corridors, but OPM was not part of the negotiations and fighters on the ground rejected it.
Sources: UCDP; CIA World Factbook.
Under President Prabowo Subianto since 2024, Indonesia pursues ‘multi-alignment,’ engaging major powers without formal alliances, rooted in its ‘bebas dan aktif’ (free and active) doctrine. It secured US defense deals while negotiating Russian oil imports for energy stability and deepened economic ties with China, including a joint statement on South China Sea claims. This pragmatic approach aims to boost economic growth toward the world’s fifth-largest economy by 2045, enhance defense modernization, and maintain strategic autonomy amid US-China rivalry. However, deals with Russia and China risk Western retaliation in a polarized world.
Sources: CSIS, RSIS, Lowy Institute
Indonesia champions ASEAN centrality to prevent external powers from dominating Southeast Asia, leveraging its position as the region’s largest economy and archipelagic state along key maritime routes like the Strait of Malacca. Under Prabowo, it strengthens maritime security, naval capacity, and acts as a ‘bridge builder’ between blocs. Its G20 presidency in 2022 demonstrated stabilizing influence by focusing on economic recovery amid Ukraine tensions. This reinforces Indonesia’s middle-power status, promoting dialogue on Indo-Pacific issues while upholding non-alignment.
Sources: Vision of Humanity, CSIS, Modern Diplomacy
Prabowo builds on Jokowi’s economic diplomacy but adopts a more assertive stance, integrating national security, defense modernization, and global partnerships. Key moves include BRICS accession for Global South voice, OECD bid, and expanded military cooperation with powers like the US and Russia. This ‘comprehensive strategy’ emphasizes sovereignty and multi-alignment over strict non-alignment, positioning Indonesia as an influential middle power. Critics note risks from personalistic leadership sidelining the Foreign Ministry and potential neutral policy erosion via deals with Russia and China.
Sources: JHI V, RSIS, Lowy Institute
The archipelago was once largely under the control of Buddhist and Hindu rulers. By around the 7th century, a Buddhist kingdom arose on Sumatra and expanded into Java and the Malay Peninsula until it was conquered in the late 13th century by the Hindu Majapahit Empire from Java. Majapahit (1290-1527) united most of modern-day Indonesia and Malaysia. Traders introduced Islam around the 11th century, and the religion gradually expanded over the next 500 years. The Portuguese conquered parts of Indonesia in the 16th century, but the Dutch ousted them (except in East Timor) and began colonizing the islands in the early 17th century. It would be the early 20th century before Dutch colonial rule was established across the entirety of what would become the boundaries of the modern Indonesian state.
Japan occupied the islands from 1942 to 1945. Indonesia declared its independence shortly before Japan’s surrender, but it required four years of sometimes brutal fighting, intermittent negotiations, and UN mediation before the Netherlands agreed to transfer sovereignty in 1949. A period of sometimes unruly parliamentary democracy ended in 1957 when President SOEKARNO declared martial law and instituted “Guided Democracy.” After an abortive coup in 1965 by alleged communist sympathizers, SOEKARNO was gradually eased from power. From 1967 until 1998, President SUHARTO ruled Indonesia with his “New Order” government. After street protests toppled SUHARTO in 1998, free and fair legislative elections took place in 1999 while the country’s first direct presidential election occurred in 2004. Indonesia has since become a robust democracy, holding four direct presidential elections, each considered by international observers to have been largely free and fair.
Indonesia is now the world’s third-most-populous democracy and the world’s largest Muslim-majority nation. It has had strong economic growth since overcoming the Asian financial crisis of the late 1990s. By the 2020s, it had the largest economy in Southeast Asia, and its economy ranked in the world’s top 10 in terms of purchasing power parity. It has also made considerable gains in reducing poverty. Although relations amongst its diverse population–there are more than 300 ethnic groups–have been harmonious in the 2000s, there have been areas of sectarian discontent and violence, as well as instances of religious extremism and terrorism. A political settlement to an armed separatist conflict in Aceh was achieved in 2005, but a separatist group in Papua continued to conduct a low-intensity conflict as of 2024.
Armed conflict in Indonesia in 2025 remained confined to Papua, where Indonesian security forces continued operations against the West Papua National Liberation Army (TPNPB), the armed wing of the OPM independence movement, which has fought for Papuan independence since the territory’s contested 1969 integration into Indonesia according to UCDP data.
UCDP recorded a substantial share of 2025’s battle-related deaths in Indonesia as civilian, with attacks on civilians reported from both Indonesian security forces and TPNPB-OPM fighters amid the long-running insurgency; TPNPB-OPM has also alleged that government troops have operated disguised as civilians in Papua, further complicating the risk to the local population according to UCDP data.
Sources: UCDP data.
Indonesian military and police forces conduct counter-insurgency operations in Papua aimed at maintaining territorial control and suppressing the armed independence movement.
The armed wing of the Free Papua Movement (OPM) fights for Papuan independence from Indonesia, a campaign dating to the disputed 1969 "Act of Free Choice" integration vote.
The conflict centers on Papua's contested political status: TPNPB-OPM seeks independence it says was denied by a flawed 1969 process, while the Indonesian state asserts sovereignty over the territory.
Civilians in Papua have been killed in crossfire and in incidents where combatants on both sides are reported to have targeted or endangered non-combatants.
Reporting attributes some deliberate attacks on civilians to TPNPB-OPM fighters and others to Indonesian security operations, reflecting a conflict with harm on both sides.
Nationalist leaders Sukarno and Mohammad Hatta declare independence from the Netherlands, triggering a four-year revolutionary struggle. The new republic claims the former Dutch East Indies, including Papua, laying the legal groundwork for later disputes over sovereignty and autonomy that still shape tensions in West Papua.
The Netherlands recognizes Indonesian independence and transfers sovereignty over most of the former colony, but retains West New Guinea (West Papua). This exclusion creates a lasting territorial dispute between Jakarta and The Hague, and seeds Papuan expectations of a distinct political future.
Under UN and U.S. pressure, the Netherlands agrees to transfer West New Guinea to temporary UN authority, then Indonesia. The deal promises Papuans an eventual act of self-determination, setting up later controversy over how that vote is conducted and remembered.
Following an alleged coup attempt, General Suharto crushes the Indonesian Communist Party amid large-scale killings, then sidelines President Sukarno and establishes the authoritarian New Order regime. Centralized military rule suppresses regional dissent, including emerging Papuan separatism, shaping long-term center–periphery tensions.
Indonesia, under UN supervision, conducts the Act of Free Choice using selected representatives rather than a one-person-one-vote referendum. They unanimously affirm integration with Indonesia. Many Papuans view the process as coerced, fueling the Free Papua Movement’s armed resistance and enduring demands for genuine self-determination.
The Organisasi Papua Merdeka (OPM) intensifies guerrilla attacks on Indonesian forces and symbols of state control, including near the giant Grasberg mine. Jakarta responds with military operations and tight security, entrenching a militarized approach to Papuan dissent that informs today’s civil war dynamics in the region.
Following Portugal’s withdrawal, Indonesia invades East Timor and incorporates it as a province. Prolonged conflict and human rights abuses internationalize criticism of Indonesia’s treatment of peripheral territories, later influencing global scrutiny of policies in Papua and Jakarta’s management of separatist movements.
The Asian financial crisis devastates Indonesia’s economy, sparking protests that force President Suharto’s resignation after three decades. The transition to Reformasi opens political space for regional demands, including Papuan calls for independence and autonomy, while weakening the aura of unquestioned central military authority.
A UN-supervised vote in East Timor results in an overwhelming choice for independence, followed by violence and eventual Indonesian withdrawal. The episode shows Jakarta can lose a disputed territory under international oversight, strengthening Papuan expectations for a similar referendum and hardening Indonesian resolve to prevent it.
Jakarta grants Papua and West Papua special autonomy, promising greater revenue sharing, cultural recognition, and local governance. Implementation is uneven and contested, leading many Papuans to view it as insufficient, sustaining support for the OPM and continued resistance to central control.
Indonesia pushes to revise foreign control over the vast Grasberg copper-gold mine in Papua, ultimately boosting state and domestic ownership. While increasing national resource control, Papuans complain of limited local benefits and environmental harm, feeding grievances that OPM draws on in its struggle.
President Joko Widodo expands roads, airports, and social programs in Papua while maintaining a strong security presence. Development spending coexists with continued military-police operations against OPM, reinforcing a dual track of investment and coercion that underlies current clashes and civilian targeting in West Papua.
An OPM faction kills road workers in Nduga, prompting major Indonesian military operations. Fighting, displacement, and reports of abuses rise, and armed groups expand activity. This escalation cements West Papua as Indonesia’s primary internal armed conflict zone entering the 2020s.
By 2023–2024, OPM-government clashes and one-sided violence against civilians in West Papua persist but slightly decrease. Other Islamist and regional insurgencies are dormant or reconciled, leaving a localized civil war dynamic in Papua as Indonesia’s main organized-violence concern today.
