Mihran was opposed by Vakhtang, the Iberian king, who, however, soon found himself overmatched, and was forced to apply to Armenia for assistance.

The Armenians came to his aid in full force; but their generosity was ill rewarded.

Vakhtang plotted to make his peace with Persia by treacherously betraying his allies into their enemies' hands; and the Armenians, forced to fight at tremendous disadvantage, suffered a severe defeat.

Sahag, the king, and Vasag, one of the brothers of Vahan, were slain; Vahan himself escaped, but at the head of only a few followers, with whom he fled to the highland district of Daik, on the borders of Home and Iberia.

Here he was "hunted upon the mountains" by Mihran, and would probably have been forced to succumb before the year was out, had not the Persian general suddenly received a summons from his sovereign, who needed his aid against the Roushans of the low Caspian region.