The Assyrian homeland or Assyria () is the homeland of the Assyrian people within which Assyrian civilisation developed, located in the Upper Mesopotamia of West Asia. The territory that forms the Assyrian homeland is, similarly to the rest of Mesopotamia, currently divided between present-day Iraq, Turkey, Iran and Syria. In Iran, the Urmia Plain forms a thin margin of the ancestral Assyrian homeland in the north-west, and the only section of the Assyrian homeland beyond the Mesopotamian region. The majority of Assyrians in Iran currently reside in the capital city, Tehran.Macuch, R. (1987). “ASSYRIANS IN IRAN i. The Assyrian community (Āšūrīān) in Iran.” Encyclopædia Iranica, II/8. pp. 817-822

The Assyrians are one of several indigenous Mesopotamian groups, claiming descent from the ancient Assyrians, Akkadians, Sumerians and Hurrians. The ancient Assyrians developed an independent civilisation in the city of Assur on the eastern border of northern Mesopotamia. The ancient Assyrian territory was divided through the centre by the Tigris River, with Mesopotamia on the west and the western margins of the Urmia Plains to the east. In modern times, Assyrians largely only recognise Assyrian towns and cities immediately neighbouring the Tigris to the east as their indigenous territory, in addition to Mesopotamia, with their homeland only expanding beyond the borders due to the major centres of Assyrian civilisation, such as the cities of Nineveh, Assur and Nimrud, being built on the banks of the Tigris itself.

Modern Assyrians are predominantly Christian, mostly adhering to the East and West Syriac liturgical rites of Christianity.For Assyrians as a Christian people, see

Joel J. Elias, The Genetics of Modern Assyrians and their Relationship to Other People of the Middle East Steven L. Danver, Native Peoples of the World: An Encyclopedia of Groups, Cultures and Contemporary Issues, p. 517 They speak Neo-Aramaic languages, most common being Suret and Turoyo.

History Ancient period

The city of Aššur and Nineveh (modern-day Mosul), which was the oldest and largest city of the ancient Assyrian empire, together with a number of other Assyrian cities, seem to have been established by 2,600 BC. However it is likely that they were initially Sumerian-dominated administrative centres. In the late 26th century BC, Eannatum of Lagash, then the dominant Sumerian ruler in Mesopotamia, mentions "smiting Subartu" (Subartu being the Sumerian name for Assyria). Similarly, in c. the early 25th century BC, Lugal-Anne-Mundu the king of the Sumerian state of Adab lists Subartu as paying tribute to him.Bertman, Stephen (2003). Handbook to Life in Ancient Mesopotamia. Oxford University Press. p. 94. . Retrieved 16 May 2015.

Assyrians are eastern Aramaic-speaking, descending from pre-Islamic inhabitants of Upper Mesopotamia. The Old Aramaic language was adopted by the population of the Neo-Assyrian Empire from around the 8th century BC, and these eastern dialects remained in wide use throughout Upper Mesopotamia during the Persian and Roman periods, and survived through to the present day. The Syriac language evolved in Achaemenid Assyria during the 5th century BC.Biblical Archaeology Review May/June 2001: Where Was Abraham's Ur? by Allan R. Millard

During the Assyrian period Duhok was named Nohadra (and also Bit Nuhadra''' or Naarda), where, during the Parthian-Sassanid rule in Assyria (c.160 BC to 250 AD) as Beth Nuhadra, gained semi-independence as one of a patchwork of Neo-Assyrian kingdoms in Assyria, which also included Adiabene, Osroene, Assur and Beth Garmai.NAARDA, Dictionary of Greek and Roman Geography (1854)

Early Christian period

Syriac Christianity took hold amongst the Assyrians between the 1st and 3rd centuries AD with the founding in Assyria of the Church of the East together with Syriac literature.

The first division between Syriac Christians occurred in the 5th century, when Upper Mesopotamian based Assyrian Christians of the Sassanid Persian Empire were separated from those in The Levant over the Nestorian Schism. This split owed just as much to the politics of the day as it did to theological orthodoxy. Ctesiphon, which was at the time the Sassanid capital, eventually became the capital of the Church of the East. During the Christian era Nuhadra became an eparchy within the Assyrian Church of the East metropolitanate of Ḥadyab (Erbil).

After the Council of Chalcedon in 451, many Syriac Christians within the Roman Empire rebelled against its decisions. The Patriarchate of Antioch was then divided between a Chalcedonian and non-Chalcedonian communion. The Chalcedonians were often labelled 'Melkites' (Emperor's Party), while their opponents were labelled as Monophysites (those who believe in the one rather than two natures of Christ) and Jacobites (after Jacob Baradaeus). The Maronite Church found itself caught between the two, but claims to have always remained faithful to the Catholic Church and in communion with the bishop of Rome, the Pope.Fuller, 1864, pp. 200–201.

Middle Ages

Both Syriac Christianity and the Eastern Aramaic language came under pressure following the Arab Islamic conquest of Mesopotamia in the 7th century, and Assyrian Christians throughout the Middle Ages were subjected to Arabizing superstrate influence. The Assyrians suffered a significant persecution with the religiously motivated large scale massacres conducted by the Muslim Turco-Mongol ruler Tamurlane in the 14th century AD. It was from this time that the ancient city of Assur was abandoned by Assyrians, and Assyrians were reduced to a minority within their ancient homeland.Hill, Henry, ed (1988). Light from the East: A Symposium on the Oriental Orthodox and Assyrian Churches. Toronto, Canada. pp. 108–109

Upper Mesopotamia had an established structure of dioceses by AD 500 following the introduction of Christianity from the 1st to 3rd centuries AD.Massacres, Resistance, Protectors: Muslim-Christian Relations in Eastern Anatolia during World War I By David Gaunt – p. 9, map p. 10. After the fall of the Neo-Assyrian Empire by 605 BC Assyria remained an entity for over 1200 years under Babylonian, Achamaenid Persian, Seleucid Greek, Parthian, Roman and Sassanid Persian rule. It was only after the Arab-Islamic conquest of the second half of the 7th century AD that Assyria as a named region was dissolved.

The mountainous region of the Assyrian homeland, Barwari, which was part of the diocese of Beth Nuhadra (current day Dohuk), saw a mass migration of Nestorians after the fall of Baghdad in 1258 and Timurlane's invasion from central Iraq.Islamic desk reference, E. J. van Donzel Its Christian inhabitants were little affected by the Ottoman conquests, however starting from the 19th century Kurdish Emirs sought to expand their territories at their expense. In the 1830s Muhammad Rawanduzi, the Emir of Soran, tried to forcibly add the region to his dominion pillaging many Assyrian villages. Bedr Khan Beg of Bohtan renewed attacks on the region in the 1840s, killing tens of thousands of Assyrians in Barwari and Hakkari before being ultimately defeated by the Ottomans.A modern history of the Kurds, David McDowall

In 1552, a schism occurred within the Church of the East: the established "Eliya line" of patriarchs was opposed by a rival patriarch, Sulaqa, who initiated what is called the "Shimun line". He and his early successors entered into communion with the Catholic Church, but in the course of over a century their link with Rome grew weak and was openly renounced in 1672, when Shimun XIII Dinkha adopted a profession of faith that contradicted that of Rome, while he maintained his independence from the "Eliya line". Leadership of those who wished to be in communion with Rome passed to the Archbishop of Amid Joseph I, recognized first by the Turkish civil authorities (1677) and then by Rome itself (1681).

A century and a half later, in 1830, headship of the Catholics was conferred on Yohannan Hormizd. Yohannan was a member of the "Eliya line" family, but he opposed the last of that line to be elected in the normal way as patriarch, Ishoʿyahb (1778–1804), most of whose followers he won over to communion with Rome, after he himself was irregularly elected in 1780, as Sulaqa was in 1552. The "Shimun line" that in 1553 entered communion with Rome and broke it off in 1672 is now that of the church that in 1976 officially adopted the name "Assyrian Church of the East", while a member of the "Eliya line" family is one of the patriarchs of the Chaldean Catholic Church.

For many centuries, from at least the time of Jerome (c. 347 – 420), the term "Chaldean" indicated the Aramaic language and was still the normal name in the nineteenth century. Only in 1445 did it begin to be used to mean Aramaic speakers in communion with the Catholic Church, on the basis of a decree of the Council of Florence, which accepted the profession of faith that Timothy, metropolitan of the Aramaic speakers in Cyprus, made in Aramaic, and which decreed that "nobody shall in future dare to call [...] Chaldeans, Nestorians"."Council of Basel-Ferrara-Florence, 1431-49 A.D.Braun-Winkler, p. 112

Previously, when there were as yet no Catholic Aramaic speakers of Mesopotamian origin, the term "Chaldean" was applied with explicit reference to their "Nestorian" religion. Thus Jacques de Vitry wrote of them in 1220/1 that "they denied that Mary was the Mother of God and claimed that Christ existed in two persons. They consecrated leavened bread and used the 'Chaldean' (Syriac) language".Wilhelm Braun, Dietmar W. Winkler, The Church of the East: A Concise History (RoutledgeCurzon 2003), p. 83 Until the second half of the 19th century the term "Chaldean" continued in general use for East Syriac Christians, whether "Nestorian" or Catholic:William F. Ainsworth, Travels and Researches in Asia Minor, Mesopotamia, Chaldea and Armenia (London 1842), vol. II, p. 272, cited in John Joseph, The Modern Assyrians of the Middle East (BRILL 2000), pp. 2 and 4 it was the West Syriacs who were reported as claiming descent from Asshur, the second son of Shem.

Early modern period Peutinger's map of the inhabited world known to the Roman geographers depicts Singara as located west of the (, "Persian troglodytes") who inhabited the territory around Mount Sinjar. By the medieval Arabs, most of the plain was reckoned as part of the province of Diyār Rabīʿa, the "abode of the Rabīʿa" tribe. The plain was the site of the determination of the degree by al-Khwārizmī and other astronomers during the reign of the caliph al-Mamun.. Sinjar boasted a famous Assyrian cathedral in the 8th century.

Syria and Upper Mesopotamia became part of the Ottoman Empire in the 16th century, following the conquests of Suleiman the Magnificent.

Modern period

During World War I the Assyrians of Anatolia suffered the Assyrian genocide which reduced their numbers by up to 40-50%. Subsequent to this, they entered the war on the side of the British and Russians. After World War I, the Assyrian homeland was divided between the British Mandate of Mesopotamia, which would become the Kingdom of Iraq in 1932, and the French Mandate of Syria which would become the Syrian Arab Republic in 1944.David Gaunt, "The Assyrian Genocide of 1915", Assyrian Genocide Research Center, 2009Akçam, Taner (2012). The Young Turks' Crime against Humanity: The Armenian Genocide and Ethnic Cleansing in the Ottoman Empire. Princeton University Press. pp. xx–xxi. . Retrieved 26 February 2015.Genocide Scholars Association Officially Recognizes Assyrian Greek Genocides. 16 December 2007. Retrieved 2010-02-02Khosoreva, Anahit. "The Assyrian Genocide in the Ottoman Empire and Adjacent Territories" in The Armenian Genocide: Cultural and Ethical Legacies. Ed. Richard G. Hovannisian. New Brunswick, NJ: Transaction Publishers, 2007, pp. 267–274. .