The Peace of Nisibis of 299, also known as the First Peace of Nisibis, was a peace treaty signed in 299 by the Roman and Sasanian empires, and concluded the Roman–Sasanian War of 296–299. The border established as a result of the treaty was maintained until the Second Peace of Nisibis of 363.
The terms of the treaty are known from a 6th-century summary of its content by Peter the Patrician during the reign of Justinian I.
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The Perso-Roman wars of 337–361 were a series of military conflicts fought between the Roman Empire and the Sasanian Empire between 337 and 361. They were a result of long-standing competition between the rival powers over influence in the border kingdoms of Armenia and Iberia, as well as the desire of Shapur II, after his Arab campaign, to revoke the unfavorable terms of the Treaty of Nisibis, which had concluded the previous war between the empires. Though the Romans under Constantius II were defeated in several sanguinary encounters, Shapur was unable to secure a decisive victory.
View the full Wikipedia page for Persian wars of Constantius IIArzanene (Greek: Ἀρζανηνή) or Aghdznik (Armenian: Աղձնիք, romanized: Ałjnikʻ) was a historical region in the southwest of the ancient kingdom of Armenia. It was ruled by one of the four bdeashkhs (bidakhsh, vitaxa) of Armenia, the highest ranking nobles below the king who ruled over the kingdom's border regions. Its probable capital was the fortress-city of Arzen. The region briefly became home to the capital of Armenia during the reign of Tigranes the Great, who built his namesake city Tigranocerta there. Arzanene was placed under the direct suzerainty of the Roman Empire after the Peace of Nisibis in 298. It was briefly brought back under Armenian control c. 371 but was soon lost again following the partition of Armenia in 387.
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