Peace Treaty of Diocletian with the Sasanian Empire
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Was a peace treaty between the Roman Empire under Diocletian (in the East) and the Sasanian Empire.
Chronology
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January 300: Diocletian and Galerius, after meeting in Nisibis, sent Sicorio Probus, one of their secretaries, to communicate the conditions for peace to the Persians. When the day of the audience finally arrived, Probus communicated the conditions for peace to the Shah: Armenia and Iberia became client kingdoms of the Romans; the border between the two empires is fixed on the Tigris river while the border between Armenia and Persia is fixed near Zintha, a fortress of Media on the border with Armenia; The Persians cede five regions beyond the Tigris. According to Peter Patrick, these were Intelene, Sophene, Arzanene, Zabdicene and Carduene. According to Ammianus Marcellinus, however, the five regions ceded would have been Zabdicene, Arzanene, Moxoene, Carduene and Rehimene. Narses only opposed the first point, which however he was forced to accept in the face of the firmness of the Romans. After the treaty was made, relatives who had been taken captive by the Romans were returned to Narses.