>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.
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.
https://en.m.wikipedia.org/wiki/Middle_Assyrian_Empire
>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. 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.