Vahan saw the importance of the conjuncture, and immediately sent to Nikhor's aid a powerful body of cavalry under the command of his own nephew, Gregory.

Zareh was defeated, mainly in consequence of the great valor and excellent conduct of the Armenian contingent.

He fled to the mountains, but was pursued, and was very shortly afterwards made prisoner and slain.
Soon after this, Kobad, son of Perozes, regarding the crown as rightfully his, put forward a claim to it, but, meeting with no success, was compelled to quit Persia and throw himself upon the kind protection of the Ephthalites, who were always glad to count among their refugees a Persian pretender.

The Ephthalites, however, made no immediate stir--it would seem, that so long as Balas paid his tribute they were content, and felt no inclination to disturb what seemed to them a satisfactory arrangement.
The death of Zareh and the flight of Kobad left Balas at liberty to resume the work which their rebellions had interrupted--the complete pacification of Armenia.

Knowing how much depended upon Vahan, he summoned him to his court, received him with the highest honors, listened attentively to his representations, and finally agreed to the terms which Vahan had formulated.