An ethnic conflict or ethnic war is an armed conflict between ethnic groups. It contrasts with civil war on one hand (where a single nation or ethnic group is fighting among itself) and regular warfare on the other, where two or more sovereign states (which may or may not be nation states) are in conflict. Examples of ethnic wars since the 1990s were typically caused by secessionist movements leading to the breakup of multi-ethnic states along ethnic lines: the Yugoslav Wars, the First Chechen War, the Nagorno-Karabakh War, the Rwandan Civil War and the War in Darfur, among others