It is perhaps most probable that the two contracting powers agreed to abstain from further interference with Iberia and Armenia, and to leave those countries to follow their own inclinations.

Armenia seems by the native accounts to have gravitated towards Rome under these circumstances, and Iberia is likely to have followed her example.

The tie of Christianity attached these countries to the great power of the West; and, except under compulsion, they were not likely at this time to tolerate the yoke of Persia for a day.

When Jovian withdrew the Roman protection from them, they were forced for a while to submit to the power which they disliked; but no sooner did his successors reverse his policy, and show themselves ready to uphold the Armenians and Iberians against Persia, than they naturally reverted to the Roman side, and formed an important support to the empire against its Eastern rival.
The death of Sapor followed the peace of A.D.376 within a few years.

He died A.D.379 or 380, after having reigned seventy years.