The Pannonian Avars (/ˈævɑːrz/) were an alliance of several groups of Eurasian nomads of various origins. The peoples were also known as the Obri in chronicles of Rus, the Abaroi or Varchonitai (Greek: Βαρχονίτες, romanized: Varchonítes), or Pseudo-Avars in Byzantine sources, and the Apar (Old Turkic: 𐰯𐰺) to the Göktürks (: Apar - Avars were called "Apar"). They established the Avar Khaganate, which spanned the Pannonian Basin and considerable areas of Central and Eastern Europe from the late 6th to the early 9th century.