Byzantine-Bulgarian relations and the legacy of Nikephoros I

The historical relationship between the Byzantines and Bulgarians was marked by intense conflict, exemplified by the reign and death of Emperor Nikephoros I (802–811). Originally a highly educated administrative official from Phrygia, Nikephoros rose to power during a transitional period for the Empire.

Following the Byzantine defeat at the Battle of Verbitsa in 811, Nikephoros I was killed in battle. In a notable act of desecration, the Bulgarian Khan Krum reportedly converted the Emperor's skull into a drinking cup for banquets. This event is often cited by historians as a catalyst for later vengeance; approximately 200 years later, Emperor Basil II, known as the ‘Bulgar-Slayer,’ blinded 15,000 Bulgarian prisoners in response to such historical provocations.

The era was also characterized by political tension regarding the Frankish Emperor Charlemagne, whose attempts to unite the Eastern and Western Empires through Empress Irene met with significant hostility from the Byzantine people and officials.