Neither Silla nor the later Goryeo wrote an official history for Balhae, and some modern scholars argue that had they done so, Koreans might have had a stronger claim to Balhae's history and territory.
Hverken Silla eller senere Goryeo skrev en officiel historie for Balhae, og nogle moderne forskere hævder, at havde de gjort det, ville koreanerne have haft en stærkere krav på Balhaes historie og territorium.