[2] During the last two years (999–1000) of the Croatian civil war, the rebels, probably with some Bulgarian help, had managed to depose Svetoslav Suronja, who allied himself with the Venetian Doge Pietro II Orseolo in 1000.
[8] The war between Venice and Croatia was renewed in Summer 1018, when Krešimir launched a campaign against the Dalmatian cities in an attempt to retake the lost territories.
The cities requested help from Otto Orseolo, who intervened on the eastern coast of the Adriatic Sea and managed to successfully repel these incursions from Croatia.
According to surviving legal documents, the islands Krk and Rab, previously under Croatian control, repledged their allegiance to Venice and promised to pay an annual tribute.
[10] On 1 September 1024, Basil Boioannes, Byzantine general and governor of the Catapanate of Italy, sailed across the Adriatic from Bari and invaded Croatia.