sentences:  Meanwhile, in the Caucasus, Byzantine and Iberian offensives were repulsed by the Persian general Bahram Chobin, who had recently been transferred from the Central Asian front where he had brought a war with the Gokturks to a successful conclusion.However, after he was defeated by the Byzantines under Romanus on the river Araxes, Bahram was contemptuously dismissed by Hormizd IV.The general, enraged at this humiliation, raised a revolt which soon gained the support of much of the Sassanid army.