Editing 971 (section)

==== Byzantine Empire ====
* [[Siege of Dorostolon|Battle of Dorostolon]]: A Byzantine expeditionary army (possibly 30–40,000 men) attacks the Bulgarian frontier, personally led by Emperor [[John I Tzimiskes|John I]]. He lays [[siege]] to the fortress city of [[Silistra|Dorostolon]] (located on the [[Danube|Lower Danube]]), and is reinforced by a fleet of 300 ships equipped with ''[[Greek fire]]''.<ref name="Treadgold509">{{A History of the Byzantine State and Society|page= 509}}.</ref> The [[Kievan Rus']] and their Bulgarian allies are reduced to extremities by [[famine]]. After a 3-month siege, Grand Prince [[Sviatoslav I of Kiev|Sviatoslav I]] agrees to sign a [[peace treaty]] with the Byzantines, whereby he renounces his interests towards Bulgarian lands and the city of [[Chersonesus|Chersonesos]] in [[Crimea]]. Sviatoslav is allowed to evacuate his army to [[Berezan Island]], while the Byzantines enter Dorostolon. John renames the city Theodoropolis (named after the reigning Empress [[Theodora, daughter of Constantine VII|Theodora]]).<ref>{{The Early Medieval Balkans|pages=186–187}}.</ref>
* [[John I Tzimiskes|John I]] returns in triumph to [[Constantinople]]. He brings along [[Boris II of Bulgaria|Boris II]], ruler (''[[tsar]]'') of the [[First Bulgarian Empire|Bulgarian Empire]], and his family, together with the contents of the Bulgarian imperial treasury. Boris is given the Byzantine 'court title' of ''[[Magister officiorum|magistros]]'' as compensation. The Bulgarian lands in [[Thrace (theme)|Thrace]] and [[Moesia|Lower Moesia]] become part of the [[Byzantine Empire]].