Odaenathus controlled a large area of the Roman East, and held the highest political and military authority in the region, superseding that of the Roman provincial governors. His self-created status was formalized by Emperor Gallienus, who had little choice but to acquiesce. Odaenathus's power relative to that of the emperor and the central authority was unprecedented and elastic, but relations remained smooth until his death. His assassination meant that the Palmyrene rulers' authority and position had to be clarified, which led to a conflict over their interpretation. The Roman court viewed Odaenathus as an appointed Roman official who derived his power from the emperor, but the Palmyrene court saw his position as hereditary. This conflict was the first step on the road to war between Rome and Palmyra.