Abyssinian–Persian wars

In the late sixth century, Sassanid Persian Empire and the Abyssinian Kingdom of Aksum fought a series of wars over control of the Himyarite Kingdom in southern Arabia. After the Battle of Hadhramaut and the Siege of Sana'a in 570, the Ethiopians were expelled from the Arabian peninsula. They had re-established their power there by 575 or 578, when another Persian army invaded the Himyarite Kingdom and re-established the deposed king on his throne as their client. It marked the end of Ethiopian rule in Arabia.