The Arsacid Armenian Collapse (alternatively, the War of Armenia and the Armenian War of Succession) was a conflict in Armenia after the Byzantine March on Armenia. The war was long and ended up with the collapse of the Arsacid Armenia into the short-lived Republic of Iberia, the Sassanid Kingdom of Udistan, and the annexation of Armenia Minor by Byzantium. The rump Armenian kingdom became uninfluyent in Middle Eastern politics.