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 decline in Assyrian power.
Even during its period of decline, Middle Assyrian kings continued to be assertive geopolitically; both Ashur-dan I (r. c. 1178–1133 BC) and Ashur-resh-ishi I (r. 1132–1115 BC) campaigned against Babylonia. Under Ashur-resh-ishi I's son and successor Tiglath-Pileser I (r. 1114–1076 BC), the Middle Assyrian Empire experienced a period of resurgence, owing to wide-ranging campaigns and conquests. Tiglath-Pileser's armies marched as far from the Assyrian heartland as the Mediterranean. Though the reconquered and newly conquered lands were held on to for some time, the empire experienced a second and more catastrophic period of decline after the death of Tiglath-Pileser's son Ashur-bel-kala (r. 1073–1056 BC), which saw the loss of most of the empire's territories outside of its heartlands, partly due to invasions by Aramean tribes. Assyrian decline began to be reversed again under Ashur-dan II (r. 934–912 BC), who campaigned extensively in the peripheral regions of the Assyrian heartland. The successes of Ashur-dan II and his immediate successors in restoring Assyrian rule over the empire's former lands, and in time going far beyond them, is used by modern historians to mark the transition from the Middle Assyrian Empire to the succeeding Neo-Assyrian Empire.
Theologically, the Middle Assyrian period saw important transformations of the role of Ashur. Having originated as a deified personification of the city of Assur itself sometime centuries earlier in the Early Assyrian period, Ashur in the Middle Assyrian period became equated with the old Sumerian head of the pantheon, Enlil, and was as a result of Assyrian expansionism and warfare transformed from a primarily agricultural god into a military one. The transition of Assyria from a city-state into an empire also had important administrative and political consequences. While the Assyrian rulers of the Old Assyrian period had governed with the title iššiak ("governor") jointly with a city assembly made up of influential figures from Assur, the Middle Assyrian kings were autocratic rulers who used the title šar ("king") and sought equal status to the monarchs of other empires. The transition into an empire also led to the development of various necessary systems, such as a sophisticated road system, various administrative divisions of territory and a complex web of royal administrators and officials.
History
Formation and rise
Assyria became an independent territorial state under Ashur-uballit I c. 1363 BC, having previously been under the suzerainty of the Mitanni kingdom. Though the transition of Assyria from being merely a city-state around Assur (as it was throughout most of the preceding Old Assyrian period) had begun already in the last few decades under Mittani suzerainty, it is the independence achieved under Ashur-uballit, as well as Ashur-uballit's conquests of nearby territories, such as the fertile region between the Tigris, the foothills of the Taurus Mountains and the Upper Zab, which modern historians use to mark the beginning of the Middle Assyrian period.
Ashur-uballit was the first native Assyrian ruler to claim the royal title šar ("king"), and the first ruler of Assur to do so since the time of the Amorite conqueror Shamshi-Adad I in the 18th century BC. Shortly after achieving independence, he further claimed the dignity of a great king on the level of the pharaohs and the Hittite kings. Ashur-uballit's claim to be a great king meant that he also embedded himself in the ideological implications of that role; a great king was expected to expand the borders of his realm to incorporate "uncivilized" territories, ideally eventually ruling the entire world. On account of political realism however, the true situation was most often diplomacy with adversaries of equal rank, such as Babylonia, and conquest only of smaller and military inferior states in the near vicinity. Ashur-uballit's reign was often regarded by later generations of Assyrians as the true birth of Assyria. The term "land of Ashur" (māt Aššur), i.e. designating Assyria as comprising a larger kingdom, is first attested as being used in his time.
The rise of Assyria was intertwined with the decline and collapse of its former suzerain, Mitanni. Assyria was subjugated by Mittani c. 1430 BC, and as such spent about 70 years under Mitanni rule. Chiefly responsible for bringing an end to Mitanni dominance in northern Mesopotamia was the Hittite king Šuppiluliuma I, whose 14th century BC war with Mitanni over control of Syria effectively led to the beginning of the end of the Mitanni kingdom. It was in this struggle for supremacy and hegemony that Ashur-uballit secured independence. The Mittani-Hittite conflict was preceded by a period of weakness in the Mitanni kingdom; the heir to the Mitanni throne, Artashumara, was murdered in the 14th century BC, which led to the accession of the otherwise minor figure Tushratta. Tushratta's rise to power led to internal conflict within the Mittani kingdom as different factions vied with each other to depose him. During the wars that followed Tushratta's accession, multiple rivals came to rule Mitanni, such as Artatama II and Shuttarna III. The Assyrians sometimes fought them and sometimes allied with them. Shuttarna III secured Assyrian support, but had to pay heavily for it in silver and gold.
Ashur-uballit, doubtlessly watching the conflict between Mitanni and the Hittites closely out of interest in expanding Assyria, directed much of his attention to the lands south of his realm. Successful campaigns were directed against both Arrapha and Nuzi, which was destroyed by Assyrian troops in the 1330s BC or before. Neither city was formally incorporated into Assyria; the Assyrian army probably withdrew to the Little Zab, allowing Babylonia to conquer the sites. In the centuries to come, Assyrian kings often found themselves as rivals of the Babylonian kings. Ashur-uballit himself did not wish to engage in long-lasting conflicts with the Babylonians, clearly illustrated since he married his daughter Muballitat-Serua to the Babylonian king Burnaburiash II. Prior to achieving peace, Burnaburiash had been a prominent enemy of the Assyrians. At one point, he had attempted to tarnish Assyrian diplomatic and trade relations with Egypt by sending a letter to the pharaohAkhenaten wherein he falsely claimed that the Assyrians were his vassals. After several years of peaceful co-existence between Assyria and Babylonia, the Babylonian king Kara-hardash, son of Burnaburiash and Muballitat-Serua, was overthrown. Muballitat-Serua was most likely killed at the same time, which prompted Ashur-uballit to march south and restore order. The usurper who had taken Babylonia in the meantime, Nazi-Bugash, was overthrown and replaced by the Assyrians with Kurigalzu II, another son of Burnaburiash.
Ashur-uballit's successors Enlil-nirari (r. c. 1327–1318 BC) and Arik-den-ili (r. c. 1317–1306 BC) were less successful than Ashur-uballit in expanding and consolidating Assyrian power, and as such the new kingdom developed somewhat haltingly and remained fragile. Kurigalzu did not remain loyal to the Assyrians and instead fought with Enlil-nirari. His treason and betrayal resulted in deep trauma, still referenced in Assyrian writings concerning diplomacy and wars against Babylonia more than a century later; it was seen by many later Assyrians as the starting point of the historical enmity between the two civilizations. At one point, Kurigalzu reached as far into the Assyrian lands as Sugagu, a settlement located only a day's journey from Assur. Although the Assyrians drove him away, an incursion this deep into the Assyrian heartland left an impression on the Assyrians, who in future conflicts often focused on Babylonian border outposts along the eastern Tigris river as a preventive measure.
First period of expansion and consolidation
Reigns of Adad-nirari I and Shalmaneser I
Under the warrior-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), Assyria began to realize its aspirations of becoming a significant regional power. Though the other powers of the Ancient Near East, such as Egypt, the Hittites and Babylonia, had at first been reluctant to view the new Assyrian kingdom as their equal, from the time of Adad-nirari I onwards, when Assyria grew to take the place of Mitanni, its status as one of the major kingdoms became undeniable. Adad-nirari I was the first Assyrian king to march against the remnants of the Mitanni kingdom and the first Assyrian king to include lengthy narratives of his campaigns in his royal inscriptions. Adad-nirari early in his reign defeated Shattuara I of Mitanni and forced him to pay tribute to Assyria as a vassal ruler. Given that the Assyrian army extensively plundered and destroyed portions of Mitanni during this campaign, it is unlikely that there at this point were any plans to outright annex and consolidate the Mitanni lands. Sometime later, Shattuara's son Wasashatta rebelled against the Assyrians, though was defeated by Adad-nirari who, as punishment, annexed several cities alongside the Khabur river. At Taite, a former Mitanni capital, Adad-nirari constructed a royal palace for himself.
The primary focus of Adad-nirari was the conquest and/or pacification of Babylonia. Not only did Babylonia present a more immediate threat, but conquering southern Mesopotamia would also be more prestigious. Through military focus on Babylonian border towns, such as Lubdi and Rapiqu, it is clear that Adad-nirari's ultimate goal was to subdue the Babylonians and achieve hegemony over all of Mesopotamia. Adad-nirari's temporary occupations of Lubdi and Rapiqu were met with an attack by the Babylonian king Nazi-Maruttash, though Adad-nirari defeated him at the Battle of Kār Ištar c. 1280 BC and the Assyro-Babylonian border was redrawn in Assyria's favor. Under Adad-nirari's son Shalmaneser I, Assyrian campaigns against its neighbors and equals intensified. According to his own inscriptions, Shalmaneser conquered eight countries (likely minor states) in the first year of his reign. Among the sites captured was the fortress Arinnu, which Shalmaneser razed to the ground and turned into dust. Some of the dust from Arinnu was collected and symbolically brought back to Assur.
After the new Mitanni king Shattuara II rebelled against Assyrian authority, assisted by the Hittites, further campaigns were conducted against Mitanni in order to suppress the resistance. Shalmaneser's campaign against Mitanni was a great success; the Mitanni capital of Washukanni was sacked and, realizing that the Mitanni lands were clearly not controllable through allowing the local rulers to continue to govern as vassals, the kingdom's lands were with some reluctance annexed into the Assyrian kingdom. The lands were not annexed directly into the royal domains, but rather placed under the rule of a viceroy who bore the title of grand vizier and king of Hanigalbat. The first such ruler was Shalmaneser's brother, Ibashi-ili, whose descendants later continued to occupy the position. This arrangement, placing the Mitanni lands under the rule of a lesser branch of the royal family, suggests that the Assyrian elites in the heartland had only a marginal interest in the new conquests. Though Shalmaneser boasted of brutal acts against the defeated Mitanni armies, in one inscription claiming to have blinded over 14,000 prisoners of war, he was also one of the first Assyrian kings to take prisoners in the first place instead of simply executing captured enemies. Adad-nirari was also a great builder; among his most significant construction projects was the construction of the city of Nimrud, a highly significant site in later Assyrian history.
Under Shalmaneser, the Assyrians also conducted significant campaigns against the Hittites. Already in the time of Adad-nirari, Assyrian envoys had been treated poorly at the court of the Hittite king Mursili III. When Mursili's successor Hattusili III reached out to Shalmaneser in an attempt to forge an alliance, probably due to recent losses against Egypt, he was insultingly rejected and called a "substitute of a great king". The strained relations between the two empires sometimes erupted into war; Shalmaneser warred several times against Hittite vassal states in the Levant. The hostilities reached their zenith under Shalmaneser's son and successor Tukulti-Ninurta I, who defeated the Hittites at the Battle of Nihriya c. 1237 BC. The Hittite defeat at Nihriya marked the beginning of the end of their influence in northern Mesopotamia.
Reign of Tukulti-Ninurta I
Shalmaneser I's son Tukulti-Ninurta I became king c. 1243 BC. He had, according to historian Stefan Jakob, "an unconditional will to create something that would last forever" and his wide-ranging conquests brought the Middle Assyrian Empire to its greatest extent. Even before he became king, neighboring kingdoms had been wary of his accession; when he assumed the throne, the Hittite king Tudḫaliya IV sent him a letter of congratulations but secretly also sent a letter to the Assyrian grand vizierBabu-aha-iddina in which he implored the vizier to dissuade Tukulti-Ninurta from attacking the Hittite territories in the mountains northwest of Assyria and to work on improving relations. Tudḫaliya's letter did little to dissuade him, who saw through the empty flatteries and attacked and conquered the lands in question in his first few years as king. According to his inscriptions, the conquest was widely celebrated as one of his outstanding early achievements.