The [a] faced many of the same problems as the Western Roman Empire, during the 7th and 8th centuries. The East was becoming more [b], and there are not many [c] left about this period. Additionally, the empire faced all sorts of [d] and [e], such as the [f].
[g] sought to win back [h], but he also faced the problem of the [i] to the East, and even a peace treaty with them didn't work out very well.
Just as the West had to deal with invasions from various barbarian groups, the Byzantine Empire found themselves facing a [j] siege in 626 and the [k] who would be a constant thorn in the Byzantine side from roughly 700 to 1000 AD.
The Byzantines also faced internal religious conflicts, including the [l] that lasted for over 100 years. [m] felt that traveling icons were a form of [n], and therefore heretical. [o] argued that the icons weren't idolatry, but rather pictorial representations of actual people.
No matter which side of the argument one might support, this movement shows the importance of the role of the [p] in religion. The Byzantine Emperor tried to be like the [q] of the West, he tried to define [r]. The Iconoclastic Movement was one of those times when the emperor was successful.