Note 268 — LIFE OF POMPEIUS.
George Long translation
In fact the Persians never subdued any of the mountain tribes within the nominal limits of their dominions; and the Caucasus was indeed not even within the nominal limits.
It is true that Alexander soon quitted Hyrkania, which lies on the south-east coast of the Caspian; but when he was in Hyrkania he was still a considerable distance from the Iberians. (Arrianus, iii. 23, &c.)