[4] The Serbs under brothers Uroš II and Desa revolted against the Byzantines, when Manuel was in Avlona planning an offensive across the Adriatic.
[4] A major war was about to erupt in the Balkans; Uroš II and Desa, in light of Byzantine retaliation, sought aid from their brother Beloš, the count palatine of Hungary.
[4] Desa's brother Uroš II ruled alone from 1140 until the battle at the Tara river against Emperor Manuel in 1150, when the Byzantines defeated the Serbs and Hungarians.
[6] In early 1160s, Uroš II was deposed being replaced by Beloš who instead soon resigned in favor of Desa, with Manuel I's approval, but gave away Dendra to the Byzantines.
[7] Desa tried to engage in diplomacy with Hungarian king Frederick, calling him as the "lord" and attacked Dendra.
Desa gave oaths to Manuel I in a public humiliation after being examined in Constantinople on his diplomacy with Hungary.