According to recent studies, it is thought that Yoshitsune was dismissed from the army to search out and kill the Taira clan not because Yoritomo resented the appointment of Yoshitsune without his permission (as described in "Azuma Kagami," which was compiled in later years), but because Yoshitsune was needed to maintain the security of Kyoto and the Cloistered Emperor and nobles were strongly against it.
近年の研究では、義経が平氏追討から外されたのは、後年の編纂書『吾妻鏡』が記すような無断任官による頼朝の怒りのためではなく、京都の治安維持に義経が必要であり、法皇や貴族たちの強い反対があったためと考えられている。