It was the first object of Perozes, after establishing himself upon the throne, to recover this valuable territory. He therefore made war upon Vatche, thought that prince was the son of his sister, and with the help of his Ephthalite allies, and of a body of Alans whom he took into his service, defeated the rebellious Albanians and completely subjugated the revolted country.

Isdigerd retaliated by summoning to his presence the principal chiefs, viz., Vasag, the Margrave; the Sparapet, or commander-in-chief, Vartan, the Mamigonian; Vazten, prince of Iberia; Vatche, king of Albania, etc.; and having got them into his power, threatened them with immediate death, unless they at once renounced Christianity and made profession of Zoroastrianism.