page_title: Parthian Empire
section_title: Rome and Armenia
hierarchical_section_title: Parthian Empire / History / Rome and Armenia
caption_attribution_description: English: Drachm of Phraates IV, Mithradatkart mint.
context_page_description: The Parthian Empire, also known as the Arsacid Empire, was a major Iranian political and cultural power in ancient Iran. Its latter name comes from its founder, Arsaces I, who led the Parni tribe in conquering the region of Parthia in Iran's northeast, then a satrapy under Andragoras, in rebellion against the Seleucid Empire. Mithridates I greatly expanded the empire by seizing Media and Mesopotamia from the Seleucids. At its height, the Parthian Empire stretched from the northern reaches of the Euphrates, in what is now central-eastern Turkey, to eastern Iran. The empire, located on the Silk Road trade route between the Roman Empire in the Mediterranean Basin and the Han dynasty of China, became a center of trade and commerce.
  The Parthians largely adopted the art, architecture, religious beliefs, and royal insignia of their culturally heterogeneous empire, which encompassed Persian, Hellenistic, and regional cultures. For about the first half of its existence, the Arsacid court adopted elements of Greek culture, though it eventually saw a gradual revival of Iranian traditions.
context_section_description: The Yuezhi Kushan Empire in northern India largely guaranteed the security of Parthia's eastern border. Thus, from the mid-1st century BC onwards, the Arsacid court focused on securing the western border, primarily against Rome. A year following Mithridates II's subjugation of Armenia, Lucius Cornelius Sulla, the Roman proconsul of Cilicia, convened with the Parthian diplomat Orobazus at the Euphrates river. The two agreed that the river would serve as the border between Parthia and Rome, although several historians have argued that Sulla only had authority to communicate these terms back to Rome.
  Despite this agreement, in 93 or 92 BC Parthia fought a war in Syria against the tribal leader Laodice and her Seleucid ally Antiochus X Eusebes (r. 95–92? BC), killing the latter. When one of the last Seleucid monarchs, Demetrius III Eucaerus, attempted to besiege Beroea (modern Aleppo), Parthia sent military aid to the inhabitants and Demetrius was defeated.
  Following the rule of Mithridates II, his son Gotarzes I succeeded him. He reigned during a period coined in scholarship as the "Parthian Dark Age," due to the lack of clear information on the events of this period in the empire, except a series of, apparently overlapping, reigns. It is only with the beginning of the reign of Orodes II in c. 57 BC, that the line of Parthian rulers can again be reliably traced. This system of split monarchy weakened Parthia, allowing Tigranes II of Armenia to annex Parthian territory in western Mesopotamia. This land would not be restored to Parthia until the reign of Sinatruces (r. c. 78–69 BC).
  Following the outbreak of the Third Mithridatic War, Mithridates VI of Pontus (r. 119–63 BC), an ally of Tigranes II of Armenia, requested aid from Parthia against Rome, but Sinatruces refused help. When the Roman commander Lucullus marched against the Armenian capital Tigranocerta in 69 BC, Mithridates VI and Tigranes II requested the aid of Phraates III (r. c. 71–58). Phraates did not send aid to either, and after the fall of Tigranocerta he reaffirmed with Lucullus the Euphrates as the boundary between Parthia and Rome.
  Tigranes the Younger, son of Tigranes II of Armenia, failed to usurp the Armenian throne from his father. He fled to Phraates III and convinced him to march against Armenia's new capital at Artaxarta. When this siege failed, Tigranes the Younger once again fled, this time to the Roman commander Pompey. He promised Pompey that he would act as a guide through Armenia, but, when Tigranes II submitted to Rome as a client king, Tigranes the Younger was brought to Rome as a hostage. Phraates demanded Pompey return Tigranes the Younger to him, but Pompey refused. In retaliation, Phraates launched an invasion into Corduene (southeastern Turkey) where, according to two conflicting Roman accounts, the Roman consul Lucius Afranius forced the Parthians out by either military or diplomatic means.
  Phraates III was assassinated by his sons Orodes II of Parthia and Mithridates IV of Parthia, after which Orodes turned on Mithridates, forcing him to flee from Media to Roman Syria. Aulus Gabinius, the Roman proconsul of Syria, marched in support of Mithridates to the Euphrates, but had to turn back to aid Ptolemy XII Auletes (r. 80–58; 55–51 BC) against a rebellion in Egypt. Despite losing his Roman support, Mithridates managed to conquer Babylonia, and minted coins at Seleucia until 54 BC. In that year, Orodes' general, known only as Surena after his noble family's clan name, recaptured Seleucia, and Mithridates was executed.
  Marcus Licinius Crassus, one of the triumvirs, who was now proconsul of Syria, invaded Parthia in 53 BC in belated support of Mithridates. As his army marched to Carrhae (modern Harran, southeastern Turkey), Orodes II invaded Armenia, cutting off support from Rome's ally Artavasdes II of Armenia (r. 53–34 BC). Orodes persuaded Artavasdes to a marriage alliance between the crown prince Pacorus I of Parthia (d. 38 BC) and Artavasdes' sister.
  Surena, with an army entirely on horseback, rode to meet Crassus. Surena's 1,000 catap
caption: Drachma of Phraates IV (r. c. 38–2 BC). Inscription reading ΒΑΣΙΛΕΩΣ ΒΑΣΙΛΕΩΝ ΑΡΣΑΚΟΥ ΕΥΕΡΓΕΤΟΥ ΕΠΙΦΑΝΟΥΣ ΦΙΛΕΛΛΗΝΟΣ "of the King of Kings Arsaces the Renowned/Manifest Benefactor Philhellene"
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