Sayfo in the context of "Ottoman Army (1861–1922)"

A diaspora (/daɪˈæspərə/ dy-ASP-ər-ə) is a population that is scattered across regions which are separate from its geographic place of origin. The word is used in reference to people who identify with a specific geographic location, but currently reside elsewhere.

Notable diasporic populations include the Jewish diaspora formed after the Babylonian exile; Romani from the Indian subcontinent; Assyrian diaspora following the Assyrian genocide; Greeks that fled or were displaced following the fall of Constantinople and the later Greek genocide as well as the Istanbul pogroms; Anglo-Saxons (primarily to the Byzantine Empire) after the Norman Conquest of England; the Chinese diaspora and Indian diaspora who left their homelands during the 19th and 20th centuries; the Irish diaspora after the Great Famine; the Scottish diaspora that developed on a large scale after the Highland and Lowland Clearances; the Italian diaspora, the Mexican diaspora; the Circassian diaspora in the aftermath of the Circassian genocide; the Armenian diaspora following the Armenian genocide; the Palestinian diaspora; the Lebanese diaspora due to the Famine of Mount Lebanon and to a lesser extent the Lebanese civil war; Syrians due to the Syrian civil war; and the Iranian diaspora which grew from half a million to 3.8 million between the 1979 revolution and 2019.

The late Ottoman genocides is a historiographical theory which sees the concurrent Armenian, Greek, and Assyrian genocides that occurred during the 1910s–1920s as parts of a single event rather than separate events, which were initiated by the Young Turks. Although some sources, including The Thirty-Year Genocide (2019) written by the historians Benny Morris and Dror Ze'evi, characterize this event as a genocide of Christians, others such as those written by the historians Dominik J. Schaller and Jürgen Zimmerer contend that such an approach "ignores the Young Turks' massive violence against non-Christians", in particular against Muslim Kurds.

The persecution of Christians can be traced from the first century of the Christian era to the present day. Christian missionaries and converts to Christianity have both been targeted for persecution, sometimes to the point of being martyred for their faith, ever since the emergence of Christianity.

Early Christians were persecuted at the hands of both Jews, from whose religion Christianity arose, and the Romans who controlled many of the early centers of Christianity in the Roman Empire. Since the emergence of Christian states in Late Antiquity, Christians have also been persecuted by other Christians due to differences in doctrine which have been declared heretical. Early in the fourth century, the empire's official persecutions were ended by the Edict of Serdica in 311 and the practice of Christianity legalized by the Edict of Milan in 312. By the year 380, Christians had begun to persecute each other. The schisms of late antiquity and the Middle Ages – including the Rome–Constantinople schisms and the many Christological controversies – together with the later Protestant Reformation provoked severe conflicts between Christian denominations. During these conflicts, members of the various denominations frequently persecuted each other and engaged in sectarian violence.

The Ottoman Committee of Union and Progress (CUP, also translated as the Society of Union and Progress; Ottoman Turkish: اتحاد و ترقى جمعيتی, romanized: İttihad ve Terakki Cemiyeti, French: Union et Progrès) was a revolutionary group, secret society, and political party, active between 1889 and 1926 in the Ottoman Empire and in the Republic of Turkey. The foremost faction of the Young Turks, the CUP instigated the 1908 Young Turk Revolution, which ended absolute monarchy and began the Second Constitutional Era. After an ideological transformation, from 1913 to 1918, the CUP ruled the empire as a dictatorship and committed genocides against the Armenian, Greek, and Assyrian peoples as part of a broader policy of ethnic erasure during the late Ottoman period. The CUP and its members have often been referred to as "Young Turks", although the Young Turk movement produced other Ottoman political parties as well. Within the Ottoman Empire its members were known as İttihadcılar ('Unionists') or Komiteciler ('Committeemen').

The organisation began as a liberal reform movement, and the autocratic government of Sultan Abdul Hamid II (r. 1876–1909) persecuted it because of its calls for constitutional government and reform. Most of its members were exiled and arrested after a failed coup-attempt in 1896 which started a period infighting among émigré Young Turk communities in Europe. The CUP's cause revived by 1906 with a new "Macedonian" cadre of bureaucrats and Ottoman army contingents based in Ottoman Macedonia which were fighting ethnic insurgents in the Macedonian Struggle. In 1908 the Unionists revolted in the Young Turk Revolution, and forced Abdul Hamid to re-instate the 1876 Constitution, ushering in an era of political plurality. During the Second Constitutional Era, the CUP at first influenced politics from behind the scenes, and introduced major reforms to continue the modernisation of the Ottoman Empire. The CUP's main rival was the Freedom and Accord Party, a conservative party which called for the decentralisation of the empire, in opposition to the CUP's desire for a centralised and unitary Turkish-dominated state.

The Middle Eastern theatre of World War I saw action between 30 October 1914 and 30 October 1918. The combatants were, on one side, the Ottoman Empire (including the majority of Kurdish tribes and Circassians, and the relative majority of Arabs), with some assistance from the other Central Powers; and on the other side, the British (with the help of a small number of Jews, Greeks, Armenians, some Kurdish tribes and Arab states, along with Hindu, Sikh and Muslim colonial troops from India) as well as troops from the British Dominions of Australia, Canada, and New Zealand, the Russians (with the help of Armenians, Assyrians, and occasionally some Kurdish tribes), and the French (with its North African and West African Muslim, Christian and other colonial troops) from among the Allied Powers. There were four main campaigns: the Sinai and Palestine, Mesopotamian, Caucasus, and Gallipoli campaigns. There were four more minor campaigns in Persia, South Arabia, the Arabian interior, and Libya.

Both sides used local asymmetrical forces in the region. On the Allied side were Arabs who participated in the Arab Revolt and the Armenian militia who participated in the Armenian resistance supported by Russia during the War; along with Armenian volunteer units, the Armenian militia formed the Armenian Corps of the First Republic of Armenia in 1918. In addition, the Assyrians joined the Allies and saw action in Southeastern Turkey, northern Mesopotamia (Iraq), northwestern Iran and northeastern Syria following the Assyrian genocide, instigating the Assyrian war of independence. Turks were persecuted by the invading Russian troops in the east and by Greek troops and Armenian fedayis in the west, east, and south of Anatolia. The theatre covered the largest territory of all theatres in the war.

The Syriac Orthodox Patriarch of Antioch and All the East (Syriac: ܦܛܪܝܪܟܐ ܕܐܢܛܝܘܟܝܐ ܘܕܟܠܗ̇ ܡܕܢܚܐ Paṭriarḵo ḏ-Anṭiuḵia waḏ-kuloh madnho) is the Bishop of Antioch, and head of the Syriac Orthodox Church (Syriac: ܥܺܕܬܳܐ ܣܽܘ̣ܪܝܳܝܬܳܐ ܬܪܺܝܨܰܬ ܫܽܘ̣ܒ̣ܚܳܐ). He presides over the Holy Synod of the Syriac Orthodox Church, which is its highest authority. The current Patriarch of Antioch is Ignatius Aphrem II, who was enthroned on 29 May 2014 as the 122nd Successor to Saint Peter.

The position of the Patriarch of Antioch was established and first held by Peter the Apostle (Syriac: ܫܹܡܥܘܿܢ ܟܹ݁ܐܦ݂ܵܐ Šemʿōn Kēp̄ā). He officially oversees the Holy Apostolic See at Antioch (modern-day Antakya, in Turkey), though the Patriarch currently resides in Damascus; the Patriarch fled to Syria during the 1915 Assyrian genocide.