It is probable that the relations between Qaidu and the Mamluks continued for there is evidence that relations existed in Chapar's time up to the fall of the house of Ogodei.218 Yet the meager and blurred information on Qaidu in the Mamluk sources shows that these diplomatic relations were limited in scope. Since the initiative in the Mongol-Mamluk war came mainly from the Ilkhans' side, it is unlikely that there was military or intelligence cooperation between Qaidu's troops and the Mamluks, although they obviously benefitted from each other's activities.