 The initial Mongol goal of establishing Đại Việt, a tributary state of the Southern Song dynasty, as their own tributary state was accomplished after the first invasion.However, the Mongols failed to impose their demands of greater tribute and direct "darughachi" oversight over Đại Việt's internal affairs during their second invasion and their goal of replacing the uncooperative Trần Nhân Tông with Trần Ích Tắc as the King of Đại Việt during the third invasion.Nonetheless, friendly relations were established and Dai Viet continued to pay tribute to the Mongol court.