The Armenian genocide was the systematic destruction of the Armenian people and identity in the Ottoman Empire during World War I. Spearheaded by the ruling Committee of Union and Progress (CUP), it was implemented primarily through the mass murder of around one million Armenians during death marches from the Turkish-dominated Anatolia to the Syrian desert and the forced Islamization of others, primarily women and children. Alongside the concurrent Assyrian and Greek genocides, the Armenian genocide enabled the creation of an ethnonationalist Turkish state, the Republic of Turkey.
Before World War I, Armenians occupied a somewhat protected, but subordinate, place in Ottoman society. Large-scale massacres of Armenians had occurred in the 1890s and 1909. The Ottoman Empire suffered a series of military defeats and territorial losses, especially during the 1912–1913 Balkan Wars. CUP leaders turned to radical Turkish nationalism to preserve the empire and grew paranoid that Armenians, whose homeland in Anatolia they considered the Turkish nation's last refuge, would seek independence. During their invasion of Russian and Persian territory in 1914, Ottoman paramilitaries massacred local Armenians. Authorities took isolated instances of Armenian resistance as evidence of a widespread rebellion and decided to permanently forestall the possibility of Armenian autonomy or independence.
On 24 April 1915, Ottoman authorities arrested and deported hundreds of Armenian intellectuals and leaders from Constantinople. At the orders of Talaat Pasha, an estimated 800,000 to 1.2 million Armenians were sent on death marches to the Syrian desert in 1915 and 1916. Driven forward by paramilitary escorts, the deportees were deprived of food and water and subjected to robbery, rape, and massacres; survivors were dispersed into concentration camps. In 1916, another wave of massacres was ordered, leaving about 200,000 deportees alive by the end of the year. Around 100,000 to 200,000 Armenian women and children were forcibly converted to Islam and integrated into Muslim households, while Armenian properties were confiscated to build a national economy. State-sponsored killings mostly ceased by early 1917, though Turkish nationalists continued massacres and ethnic cleansing of survivors through the Turkish War of Independence after World War I.
Regarded as "the apex of horrors conceivable" before World War II, the genocide destroyed more than two thousand years of Armenian civilization in eastern Anatolia. Efforts to prosecute the perpetrators were largely unsuccessful and ended after the Treaty of Lausanne established Turkey's borders in 1923. While almost all historians and scholars outside of Turkey accept the genocide as a historical fact, the Turkish government maintains that the deportation of Armenians was a legitimate action that cannot be described as genocide and lobbies against recognition. As of 2026, 36 countries have recognized the genocide, concurring with the academic consensus.
Background
Armenians in the Ottoman Empire
The presence of Armenians in Anatolia has been documented since the sixth century BCE, about 1,500 years before the arrival of Turkmens under the Seljuk dynasty. The Kingdom of Armenia adopted Christianity as its national religion in the fourth century CE, establishing the Armenian Apostolic Church. Following the end of the Byzantine Empire in 1453, two Islamic empires—the Ottoman Empire and the Iranian Safavid Empire—contested Western Armenia, which was permanently separated from Eastern Armenia (held by the Safavids) by the 1639 Treaty of Zuhab. The Ottoman Empire was multiethnic and multireligious, and its millet system offered non-Muslims a subordinate but protected place in society. Sharia law encoded Islamic superiority but guaranteed property rights and freedom of worship to non-Muslims (dhimmis) in exchange for a special tax.
On the eve of World War I in 1914, around two million Armenians lived in Ottoman territory, mostly in Anatolia, a region with a total population of 15–17.5 million. According to the Armenian Patriarchate's estimates for 1913–1914, there were 2,925 Armenian towns and villages in the Ottoman Empire, of which 2,084 were in the Armenian highlands adjacent to the Russian border. Armenians were a minority in most places where they lived, alongside Turkish and Kurdish Muslim and Greek Orthodox Christian neighbors. According to the Patriarchate's figure, 215,131 Armenians lived in urban areas, especially Constantinople, Smyrna, and Eastern Thrace. Although most Ottoman Armenians were peasant farmers, they were overrepresented in commerce. As middleman minorities, despite the wealth of some Armenians, their overall political power was low, making them especially vulnerable.
Armenians in the eastern provinces lived in semi-feudal conditions and commonly encountered forced labor, illegal taxation, and unpunished crimes against them including robberies, murders, and sexual assaults. Beginning in 1839, the Ottoman government issued a series of reforms to centralize power and equalize the status of Ottoman subjects regardless of religion. The reforms to equalize the status of non-Muslims were strongly opposed by Islamic clergy and Muslims in general, and remained mostly theoretical. Because of the abolition of the Kurdish emirates in the mid-nineteenth century, the Ottoman government began to directly tax Armenian peasants who had previously paid taxes only to Kurdish landlords. The latter continued to exact levies illegally.
From the mid-nineteenth century, Armenians faced large-scale land usurpation as a consequence of the sedentarization of Kurdish tribes and the arrival of Muslim refugees and immigrants (mainly Circassians) following the Russo-Circassian War. In 1876, when Sultan Abdul Hamid II came to power, the state began to confiscate Armenian-owned land in the eastern provinces and give it to Muslim immigrants as part of a systematic policy to reduce the Armenian population of these areas. This policy lasted until World War I. These conditions led to a substantial decline in the population of the Armenian highlands; 300,000 Armenians left the empire, and others moved to towns. Some Armenians joined revolutionary political parties, of which the most influential was the Armenian Revolutionary Federation (ARF), founded in 1890. These parties primarily sought reform within the empire and found only limited support from Ottoman Armenians.
Russia's decisive victory in the 1877–1878 war forced the Ottoman Empire to cede parts of eastern Anatolia, the Balkans, and Cyprus. Under international pressure at the 1878 Congress of Berlin, the Ottoman government agreed to carry out reforms and guarantee the physical safety of its Armenian subjects, but there was no enforcement mechanism; conditions continued to worsen. The Congress of Berlin marked the emergence of the Armenian question in international diplomacy as Armenians were for the first time used by the Great Powers to interfere in Ottoman politics. Although Armenians had been called the "loyal millet" in contrast to Greeks and others who had previously challenged Ottoman rule, the authorities began to perceive Armenians as a threat after 1878. In 1891, Abdul Hamid created the Hamidiye regiments from Kurdish tribes, allowing them to act with impunity against Armenians. From 1895 to 1896 the empire saw widespread massacres; at least 100,000 Armenians were killed primarily by Ottoman soldiers and mobs let loose by the authorities. Many Armenian villages were forcibly converted to Islam. The Ottoman state bore ultimate responsibility for the killings, whose purpose was violently restoring the previous social order in which Christians would unquestioningly accept Muslim supremacy, and forcing Armenians to emigrate, thereby decreasing their numbers.
Young Turk Revolution
Abdul Hamid's despotism prompted the formation of an opposition movement, the Young Turks, which sought to overthrow him and restore the 1876 Constitution of the Ottoman Empire, which he had suspended in 1877. One faction of the Young Turks was the secret and revolutionary Committee of Union and Progress (CUP), based in Salonica, from which the charismatic conspirator Mehmed Talaat (later Talaat Pasha) emerged as a leading member. Although skeptical of a growing, exclusionary Turkish nationalism in the Young Turk movement, the ARF decided to ally with the CUP in December 1907. In 1908, the CUP came to power in the Young Turk Revolution, which began with a string of CUP assassinations of leading officials in Macedonia. Abdul Hamid was forced to reinstate the 1876 constitution and restore the Ottoman parliament, which was celebrated by Ottomans of all ethnicities and religions. Security improved in parts of the eastern provinces after 1908 and the CUP took steps to reform the local gendarmerie, although tensions remained high. Despite an agreement to reverse the land usurpation of the previous decades in the 1910 Salonica Accord between the ARF and the CUP, the latter made no efforts to carry this out.
In early 1909 an unsuccessful countercoup was launched by conservatives and some liberals who opposed the CUP's increasingly repressive governance. When news of the countercoup reached Adana, armed Muslims attacked the Armenian quarter and Armenians returned fire. Ottoman soldiers did not protect Armenians and instead armed the rioters. Between 20,000 and 25,000 people, mostly Armenians, were killed in Adana and nearby towns. Unlike the 1890s massacres, the events were not organized by the central government but instigated by local officials, intellectuals, and Islamic clerics, including CUP supporters in Adana. Although the massacres went unpunished, the ARF continued to hope that reforms to improve security and restore lands were forthcoming, until late 1912, when they broke with the CUP and appealed to the European powers. On 8 February 1914, the CUP reluctantly agreed to reforms brokered by Germany that provided for the appointment of two European inspectors for the entire Ottoman east and putting the Hamidiye regiments in reserve. CUP leaders feared that these reforms, which were never implemented, could lead to partition and cited them as a reason for the elimination of the Armenian population in 1915.
Balkan Wars
The 1912 First Balkan War resulted in the loss of almost all of the empire's European territory and the mass expulsion of Muslims from the Balkans. Ottoman Muslim society was incensed by the atrocities committed against Balkan Muslims, intensifying anti-Christian sentiment and leading to a desire for revenge. Blame for the loss was assigned to all Christians, including the Ottoman Armenians, many of whom had fought on the Ottoman side. The Balkan Wars put an end to the Ottomanist movement for pluralism and coexistence; instead, the CUP turned to an increasingly radical Turkish nationalism to preserve the empire. CUP leaders such as Talaat and Enver Pasha came to blame non-Muslim population concentrations in strategic areas for many of the empire's problems, concluding by mid-1914 that they were internal tumors to be excised. Of these, Ottoman Armenians were considered the most dangerous, because CUP leaders feared that their homeland in Anatolia—claimed as the last refuge of the Turkish nation—would break away from the empire as the Balkans had.
In January 1913, the CUP launched another coup, installed a one-party state, and strictly repressed all real or perceived internal enemies. After the coup, the CUP shifted the demography of border areas by resettling Balkan Muslim refugees while coercing Christians to emigrate; immigrants were promised property that had belonged to Christians. When parts of Eastern Thrace were reoccupied by the Ottoman Empire during the Second Balkan War in mid-1913, there was a campaign of looting and intimidation against Greeks and Armenians, forcing many to emigrate. Around 150,000 Greek Orthodox from the Aegean coast were forcibly deported in May and June 1914 by Muslim bandits, who were secretly backed by the CUP and sometimes joined by the regular army. Historian Matthias Bjørnlund states that the perceived success of the Greek deportations allowed CUP leaders to envision even more radical policies "as yet another extension of a policy of social engineering through Turkification".
Ottoman entry into World War I
A few days after the outbreak of World War I, the CUP concluded an alliance with Germany on 2 August 1914. The same month, CUP representatives went to an ARF conference demanding that, in the event of war with Russia, the ARF incite Russian Armenians to intervene on the Ottoman side. Instead, the delegates resolved that Armenians should fight for the countries of their citizenships. During its war preparations, the Ottoman government recruited thousands of prisoners to join the paramilitary Special Organization, which initially focused on stirring up revolts among Muslims behind Russian lines beginning before the empire officially entered the war. On 29 October 1914, the empire entered World War I on the side of the Central Powers by launching a surprise attack on Russian ports in the Black Sea. Many Russian Armenians were enthusiastic about the war, but Ottoman Armenians were more ambivalent, afraid that supporting Russia would bring retaliation. Organization of Armenian volunteer units by Russian Armenians, later joined by some Ottoman Armenian deserters, further increased Ottoman suspicions against their Armenian population.
Wartime requisitions were often corrupt and arbitrary, and disproportionately targeted Greeks and Armenians. Armenian leaders urged young men to accept conscription into the army, but many soldiers of all ethnicities and religions deserted due to difficult conditions and concern for their families. At least ten percent of Ottoman Armenians were mobilized, leaving their communities bereft of fighting-age men and therefore largely unable to organize armed resistance to deportation in 1915. During the Ottoman invasion of Russian and Persian territory, Caucasus, General Myshlayevsky, ordered the evacuation of Urmia and Tabriz. Ottoman and Kurdish forces led by the tribal leader Agha Simko Shikak filled the vacuum in January 1915 and massacred the local Armenians and Assyrian/Syriac Christians. Beginning in November 1914, provincial governors of Van, Bitlis, and Erzerum sent many telegrams to the central government pressing for more severe measures against the Armenians, both regionally and throughout the empire. These requests were endorsed by the central government already before 1915. Armenian civil servants were dismissed from their posts in late 1914 and early 1915. In February 1915, the CUP leaders decided to disarm Armenians serving in the army and transfer them to labor battalions. The Armenian soldiers in labor battalions were systematically executed, although many skilled workers were spared until 1916.