<human>:  What was the cause of the war in the Kurukshetra War?
<bot>: The war was fought between the Pandavas and the Kauravas, who were cousins. The Pandavas were the sons of Pandu, while the Kauravas were the sons of Dhritarashtra. The Kauravas were the rulers of Hastinapur, while the Pandavas were the rulers of Indraprastha. The war was fought over the throne of Hastinapur.