His forces drove the Assyrians back across the pre-war border and deep into the Assyrian heartlands, reconquering major towns and cities around Lake Urmia, including Mushashir, Ushnu, and Tepe, and conquering the territory as far south as the city of Nimrud on the Tigris River. These victories forced the Assyrians to accept a lengthy peace and cede large tracts of territory north of the Tigris. The remainder of Argishti's lengthy reign was characterized by a "Golden Age", a period of lengthy peace and economic prosperity, which carried into the reigns of Argishti's two successors, his son Rusa II and his grandson Sarduri III.
Argishti's military successes led to the re-establishment of Assyrian control over key territories, including those near Lake Urmia, such as Mushashir, Ushnu, and Tepe. This ultimately resulted in the extension of their influence as far south as Nimrud on the Tigris River. The consequences of these victories were a prolonged peace, which led to the cession of territories north of the Tigris by the Assyrians. The remainder of Argishti's reign was marked by a "Golden Age" of peace and prosperity.