Khmer–Cham wars

Khmer–Cham wars were a series of conflicts and contests between states of the Khmer Empire and Champa, later involving Đại Việt, that lasted from the mid-10th century to the early 13th century in mainland Southeast Asia. The first conflict began in 950 AD when Khmer troops sacked the Cham principality of Kauthara. Tensions between the Khmer Empire and Champa reached a climax in the middle of the 12th century when both deployed field armies and waged devastating wars against each other. The conflicts ended after the Khmer army voluntarily retreated from occupying Champa in 1220.