Like the double-headed eagle adopted by European emperors since Byzantine times, the EU now tries to act as one body with two heads.

欧盟如今想要采取一个体系两位首脑的做法，就好像欧洲君主自拜占庭时期开始用双头鹰作徽记一样。

youdao

As with the blond Scandinavian bodyguards who attended the Byzantine emperors, their uprightness was all the more starkly evidenced by the shiftiness of the guy they were protecting.

NEWYORKER: I, Nephi

In this view, George Bush is the successor of a long line of rulers, from the Byzantine emperors, to the Holy Roman emperors to Queen Victoria, who have obstructed the divinely ordained and inevitable spread of Islam.

ECONOMIST: Islam and the West