Khaganate of Kubrat was founded by a brutal Khamorth clan of the same name who invaded Videssos and established the Khaganate of Kubrat, which extended on both sides of the Astris River and was a major threat to the Empire of Videssos. Unlike the other states founded by the descendants of the Khamorth invaders, Khatrish and Thatagush, the Kubrati never adopted the worship of Phos and continued their worship of spirits. Kubrat existed for three hundred years, raiding Videssos for peasants to enslave and for plunder. They were finally invaded by the savage Halogai force assembled by Harvas Black-Robe and hired by Petronas so he could attack Makuran. Harvas sacked Pliskavos, Kubrat's capital and only real city, and ruled there until Krispos of Videssos drove Harvas and the Haloga out and re-annexed Kubrat to Videssos.