 The Muslim sources place the actual conquest of the country in 645/646, under the command of Habib ibn Maslama al-Fihri.The Arabs first moved against the western, Byzantine portion of the country, captured Theodosiopolis and defeated a Byzantine army, before subduing the Armenian princes around Lake Van and marching onto Dvin, the capital of the former Persian portion of Armenia.Dvin capitulated after a few days of siege, as did Tiflis further north in Caucasian Iberia.