John I Tzimiskes was Byzantine emperor from 969 to 976 CE. Although he took the throne by murdering his predecessor Nikephoros II Phokas, John was a popular emperor. A skilled general and a competent politician, he is known for expanding Byzantium's borders to the Danube River in the west and further into Syria in the east.
This is a companion discussion topic for the original content at https://www.worldhistory.org/John_I_Tzimiskes/.