A number of small states on the borders of the Byzantine Empire and of Sassanian Persia were constant areas of contention between the two powers. The Georgian Principality of Iberia was in the Sassanian sphere of influence, but was Christian. Iberian bishops were sent to Antioch in the Byzantine Empire to be consecrated. Vakhtang I of Iberia was encouraged into war with the Sassanians. A "fervent Christian", his religious policies were "part and parcel of his larger strategic aims". After a lengthy struggle he was defeated and Iberia subjugated as a Sassanian province in 522.