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Boris II)
Czar Boris II of Bulgaria, the son of Czar Peter I of Bulgaria ruled for three years (969-972).
Boris was captured by the invading Rus in 969 and made a puppet ruler for Kyivan Rus. In order to keep the Kyivans from cementing their hold in the region, the Byzantines under Emperor John I Tzimisces invaded Bulgaria and attacked the forces of Prince Sviatoslav of Kyiv in 972. The Byzantines drove the Rus to the Danube and forced Sviatoslav to abandon Bulgaria. Boris was forced to step down from the throne and annexed eastern Bulgaria. After a short captivity in Constantinople, he was accidentally shot dead by a Bulgarian sentry as he approached the border in 978.