Sarduri II
Ispuini was also the first Urartian king to write in the Urartian language (previous kings left records written in Akkadian). He made his son Sarduri II viceroy. After conquering Musasir, Ispuini was in turn attacked by Shamshi-Adad V. His co-regent and subsequent successor, Menua (c. 800–785 BC) also enlarged the kingdom greatly and left inscriptions over a wide area. During Ispuini's and Menua's joint rule, they shifted from referring to their territory as Nairi, instead opting for "Bianili".