[6] He gained a victory over the Arabs, for which he was recognized as ruler of Armenia by Constans in 643,[8] but failed to coordinate with a second army under Procopius, who suffered a severe defeat for which the Byzantines put the blame on Theodore.
[2][9] Constans paid special attention to his family's imperiled homeland of Armenia, and he favored Byzantine generals of Armenian extraction to halt Arab advances.
[9] Faced with the impending loss of the province, he marched in, spent the winter of 652–3 at Dvin, and returned to Constantinople the next year after leaving an army in place.
[2] Theodore's truce with then-governor of Syria and future caliph, Muawiyah, left Armenia with a relatively high level of autonomy,[2] and Arabs concentrated their efforts against the remaining pockets of resistance in the Sassanid Empire.
[7] According to Manuk Abeghian and a number of other scholars, the popularity of Rshtuni in Armenia manifested itself in the character of K'eṛi T'oros in the epic poem of David of Sasun.