During the 1114-1125 war with the Jurchen that resulted in the destruction of the Liao state, the Jurchen leader Aguda decided to seize the Supreme Capital, not so much because it held any strategic importance as that it would be useful for symbolic purposes. This was accomplished in 1120; Jurchen troops looted and burned down buildings and tombs of the imperial family. Aguda's Jin Empire, however, never managed to subordinate the bulk of the various Mongol and Turkic tribes that had previously pledged allegiance to the Liao; these tribes remained largely independent until the formation of the Mongol Empire at the beginning of the 13th century.