Fifty-Year Peace Treaty

The treaty, negotiated by Peter the Patrician for the Byzantine emperor Justinian I and Izadgushasp for the Sassanid king Khosrau I ended the 20-year-long war over the Caucasian kingdom of Lazica.

[2] The Sassanids undertook to evacuate Lazica, but the status of the neighboring country of Suania was left unclear to become a future source of disagreement.

[1] The expenses of the defense lines in the Caucasus against the nomads in the north, for which there was a mutual interest and had been the responsibility of the Sasanians, were included in the payments.

[2] Although the war itself had ended inconclusively, the Sasanians were in a slightly better position because the Romans were forced to pay them an annual fixed sum.

Among ancient sources, Menander Protector and Theophylaktos Simokattes blame Justin II, while Theophanes of Byzantium disagrees.