If he did not in the course of his long reign advance the Parthian frontier, at any rate he was not obliged to retract it.

Apparently, he ceded nothing to the Scyths as the price of their assistance.

He maintained the Parthian supremacy over Northern Media.

He lost no inch of territory to the Romans.

It was undoubtedly a prudent step on his part to soothe the irritated vanity of Rome by a surrender of useless trophies, and scarcely more useful prisoners; and, we may doubt if this concession was not as effective as the dread of the Parthian arms in producing that peace between the two countries which continued unbroken for above ninety years from the campaign of Antony, and without serious interruption for yet another half century.