Although the Rashidun Caliphate did not manage to obtain land along the coast of the Aegean sea, its conquest of the Eastern Anatolian peninsula as well as Egypt, the Levant, and North Africa left the Byzantine Empire weakened.
The Rashidun Caliphate's failure to capture land along the Aegean sea was overshadowed by its successful conquests in the Eastern Anatolian peninsula, Egypt, the Levant, and North Africa, which ultimately weakened the Byzantine Empire.