The position of the Arsacid dynasty of Armenia in the relations between the Sassanian Empire and the Roman Empire in the third century AD

During the Arsacids Empire The Arsacids of Armenia because of the relative causal And relationship with the Iranian rulers had always been an ally of Iran against Rome; But With the fall of the Arsacids and ascendency of the Sassanids in Iran, began a new chapter in the relations of Armenia with Iran and Rome. Unlike the period before the Arsacids of Armenia has always been at the forefront in the struggle between Iran and Rome were counter the influence of the Roman Empire, this time with the fall of the Arsacids in Iran and the rise of the Sassanid dynasty, the Arsacids of Armenia were in alliance with the enemies of the Sassanids. In the meantime, the Sassanids also followed a tense policy towards Armenia in the face of the Roman Empire and took the lead in the successive wars of Ardashir and his successor, Shapur with the Roman Empire over Armenia was, in the end, success Shapur in Armenia was under colonize. So that the middle of the third century AD, Armenia became the headquarters of the Sassanid forces were at war with Rome. The Arsacids kings of Armenia in this period to stay against the Sassanids damage, defected to the Roman Empire And from Rome on some parts of Western Armenia remained under Roman rule, as puppet kings ruled Rome. Parthian influence in Armenia so far was that Narseh after the defeat of the emperor of the Roman Empire at the end of the third century, Calling for acceptance and going back Tiridates, the Parthian prince before the Sassanid forces of the Roman Empire had taken refuge.