Ashur (god) in the context of "Ashur-nirari V"

The Middle Assyrian Empire was the third stage of Assyrian history, covering the history of Assyria from the accession of Ashur-uballit I c. 1363 BC and the rise of Assyria as a territorial kingdom to the death of Ashur-dan II in 912 BC. The Middle Assyrian Empire was Assyria's first period of ascendancy as an empire. Though the empire experienced successive periods of expansion and decline, it remained the dominant power of northern Mesopotamia throughout the period. In terms of Assyrian history, the Middle Assyrian period was marked by important social, political and religious developments, including the rising prominence of both the Assyrian king and the Assyrian national deity Ashur.

The Middle Assyrian Empire was founded through Assur, a city-state through most of the preceding Old Assyrian period, and the surrounding territories achieving independence from the Mitanni kingdom. Under Ashur-uballit, Assyria began to expand and assert its place as one of the great powers of the Ancient Near East. This aspiration chiefly came into fruition through the efforts of the kings Adad-nirari I (r. c. 1305–1274 BC), Shalmaneser I (r. c. 1273–1244 BC) and Tukulti-Ninurta I (r. c. 1243–1207 BC), under whom Assyria expanded to for a time become the dominant power in Mesopotamia. The reign of Tukulti-Ninurta I marked the height of the Middle Assyrian Empire and included the subjugation of Babylonia and the foundation of a new capital city, Kar-Tukulti-Ninurta, though it was abandoned after his death. Though Assyria was left largely unscathed by the direct effects of the Late Bronze Age collapse of the 12th century BC, the Middle Assyrian Empire began to experience a significant period of decline roughly at the same time. The assassination of Tukulti-Ninurta I c. 1207 BC led to inter-dynastic conflict and a significant drop in Assyrian power.

The king of Assyria (Akkadian: Iššiʾak Aššur, later šar māt Aššur) was the ruler of the ancient Mesopotamian kingdom of Assyria, which was founded in the late 21st century BC and fell in the late 7th century BC. For much of its early history, Assyria was little more than a city-state, centered on the city Assur, but from the 14th century BC onwards, Assyria rose under a series of warrior kings to become one of the major political powers of the Ancient Near East, and in its last few centuries it dominated the region as the largest empire the world had seen thus far. Ancient Assyrian history is typically divided into the Old, Middle and Neo-Assyrian periods, all marked by ages of ascendancy and decline.

The ancient Assyrians did not believe that their king was divine himself, but saw their ruler as the vicar of their principal deity, Ashur, and as his chief representative on Earth. In their worldview, Assyria represented a place of order while lands not governed by the Assyrian king (and by extension, the god Ashur) were seen as places of chaos and disorder. As such it was seen as the king's duty to expand the borders of Assyria and bring order and civilization to lands perceived as uncivilized. As Assyria expanded, its rulers gradually adopted grander and more boastful titles. Early kings used Iššiʾak Aššur (representative/viceroy of Ashur), considering the god Ashur to be the true king. From the time of Ashur-uballit I (14th century BC), the rulers instead used king (šar). In time, further titles, such as "king of Sumer and Akkad", "king of the Universe" and "king of the Four Corners of the World", were added, often to assert their control over all of Mesopotamia.

Ashurbanipal (Neo-Assyrian Akkadian: 𒀸𒋩𒆕𒀀, romanized: Aššur-bāni-apli, meaning "Ashur is the creator of the heir") was the king of the Neo-Assyrian Empire from 669 BC to his death in 631. He is generally remembered as the last great king of Assyria. Ashurbanipal inherited the throne as the favored heir of his father Esarhaddon; his 38-year reign was among the longest of any Assyrian king. Though sometimes regarded as the apogee of ancient Assyria, his reign also marked the last time Assyrian armies waged war throughout the ancient Near East and the beginning of the end of Assyrian dominion over the region.

Esarhaddon selected Ashurbanipal as heir c. 673. The selection of Ashurbanipal bypassed the elder son Shamash-shum-ukin. Perhaps in order to avoid future rivalry, Esarhaddon designated Shamash-shum-ukin as the heir to Babylonia. The two brothers jointly ascended to their respective thrones after Esarhaddon's death in 669, though Shamash-shum-ukin was relegated to being Ashurbanipal's closely monitored vassal. Much of the early years of Ashurbanipal's reign was spent fighting rebellions in Egypt, which had been conquered by his father. The most extensive campaigns of Ashurbanipal were those directed towards Elam, an ancient enemy of Assyria, and against Shamash-shum-ukin, who gradually began to resent the overbearing control that his younger brother held over him. Elam was defeated in a series of conflicts in 665, 653 and 647–646. Shamash-shum-ukin rebelled in 652 and assembled a coalition of Assyria's enemies but was defeated and died during Ashurbanipal's siege of Babylon in 648. On account of a lack of surviving records, much of Ashurbanipal's late reign is poorly known.

The Old Assyrian period was the second stage of Assyrian history, covering the history of the city of Assur from its rise as an independent city-state under Puzur-Ashur I c. 2025 BC to the foundation of a larger Assyrian territorial state after the accession of Ashur-uballit I c. 1363 BC, which marks the beginning of the succeeding Middle Assyrian period. The Old Assyrian period is marked by the earliest known evidence of the development of a distinct Assyrian culture, separate from that of southern Mesopotamia and was a geopolitically turbulent time when Assur several times fell under the control or suzerainty of foreign kingdoms and empires. The period is also marked with the emergence of a distinct Assyrian dialect of the Akkadian language, a native Assyrian calendar and Assur for a time becoming a prominent site for international trade.

For most of the Old Assyrian period, Assur was a minor city-state with little political and military influence. In contrast to Assyrian kings of later periods, the kings in the Old Assyrian period were just one of the prominent leading officials in the city's administration and normally used the style Išši'ak Aššur, which translates to "governor (on behalf) of (the god) Ashur", rather than šar (king). The kings presided over the city's actual administrative body, the Ālum (city assembly), which was made up of prominent and influential members among Assur's populace. Though lacking in military and political might, Assur was an important economic center in northern Mesopotamia. From the time of Erishum I (c. 1974–1935 BC) until the late 19th century BC, the city was a hub in a large trading network that spanned from the Zagros Mountains in the east to central Anatolia in the west. During their time as prominent traders the Assyrians founded a number of trading colonies at various sites in the trading network, such as Kültepe.

35°29′41″N 43°16′12″E / 35.494685°N 43.270008°E / 35.494685; 43.270008 (Kar-Tukulti-Ninurta (Tulul ul-Aqar)

Kar-Tukulti-Ninurta (modern Tulul ul Aqar (Telul al-Aqr) in Salah al-Din Governorate, Iraq) was a new cult center for Ashur and perhaps a new capital city founded by the Assyrian king Tukulti-Ninurta I (about 1243–1207 BC) just north of Assur. Its name meant "Port Tukulti-Ninurta".

Tiglath-Pileser I (/ˈtɪɡləθ paɪˈliːzər, -ˌlæθ, pɪ-/; from the Hebraic form of Middle Assyrian Akkadian: 𒆪𒋾𒀀𒂍𒈗𒊏, romanized: Tukultī-apil-Ešarra, "my trust is in the son of Ešarra") was a king of Assyria during the Middle Assyrian period (1114–1076 BC). According to Georges Roux, Tiglath-Pileser was "one of the two or three great Assyrian monarchs since the days of Shamshi-Adad I". He was known for his "wide-ranging military campaigns, his enthusiasm for building projects, and his interest in cuneiform tablet collections". Under him, Assyria became the leading power of the Ancient Near East, a position the kingdom largely maintained for the next five hundred years. He expanded Assyrian control into Anatolia and Syria, and to the shores of the Mediterranean Sea. From his surviving inscriptions, he seems to have carefully cultivated a fear of himself in his subjects and in his enemies alike.

The beginning of Tiglath-Pileser's I reign had heavy involvement in military campaigns, as suggested from translated texts from the Middle Assyrian period. The texts were believed to be "justification of war." Although little literary text is available from the time of Tiglath-Pileser I, there is evidence to show that the reign of Tiglath-Pileser I inspired the act of recording information, including that of his military campaigns. Toward the end of Tiglath-Pileser's reign literary texts took the form of "summary texts" which served as a vessel for as much information about his reign as possible, with the intent to be handed down to his successor.

The Early Assyrian period was the earliest stage of Assyrian history, preceding the Old Assyrian period and covering the history of the city of Assur, tge surrounding area of Upper Mesopotamia and its people and culture, prior to the foundation of Assyria as an independent city-state under Ushpia c. 2086 BC. Very little material and textual evidence survives from this period. The earliest archaeological evidence at Assur dates to the Early Dynastic Period, c. 2600 BC, but the city may have been founded even earlier since the area had been inhabited for thousands of years prior and other nearby Assyrian cities, such as Nineveh and Arbela are significantly older.

The archaeological evidence suggests that Assur was originally inhabited by both Semites and Hurrians and was the site of a fertility cult devoted to the Assyro-Babylonian goddess Ishtar. The name "Assur" is not historically attested prior to the age of the Akkadian Empire in the 24th century BC; it is possible that the city was originally named Baltil, used in later times to refer to its oldest portion. In tge centuries before the rise of the Akkadian Empire, the Semitic-speaking ancestors of the Assyrians, Akkadians and Babylonians settled in Assur and the surrounding area, either displacing or assimilating the original population. Founded in a both holy and strategic location, the city itself was gradually deified during the Early Assyrian period and eventually became personified as the god Ashur, firmly established as the Assyrian national deity by the time of Puzur-Ashur I in 2025 BC.

The post-imperial period was the final stage of ancient Assyrian history, covering the history of the Assyrian heartland from the fall of the Neo-Assyrian Empire in 609 BC to the final sack and destruction of Assur, Assyria's ancient religious capital, by the Sasanian Empire c. AD 240. There was no independent Assyrian state during this time, with Assur and other Assyrian cities instead falling under the control of the successive Median (615–549 BC), Neo-Babylonian (612–539 BC), Achaemenid (539–330 BC), Seleucid (312–c. 141 BC) and Parthian (c. 141 BC–AD 224) empires. The period was marked by the continuance of ancient Assyrian culture, traditions and religion, despite the lack of an Assyrian kingdom. The ancient Assyrian dialect of the Akkadian language went extinct however, completely replaced by Aramaic by the 5th century BC.

During the fall of Assyria in the Medo-Babylonian conquest of the Assyrian Empire 626–609 BC, northern Mesopotamia was extensively sacked and destroyed by Median and Babylonian forces. The Babylonian kings, who annexed large parts of Assyria cared little for economically or socially developing the region and as such there was a dramatic decline in population density. Many of the greatest cities of the Neo-Assyrian period, such as Nineveh, were deserted and others, such as Assur, decreased dramatically in size and population. The region only began the process of recovery under the rule of the Achaemenid Empire. After his conquest of Babylon in 539, the Achaemenid king Cyrus the Great returned the cult statue of the Assyrian national deity Ashur to Assur. The Achaemenid practice of not interfering with local cultures, and the organization of the Assyrian lands into a single province, Athura, allowed Assyrian culture to endure.