During the closing stages of the Cold War, Serbian nationalist Slobodan Milošević took power as the leader of the Socialist Republic of Serbia. His nationalist policies alienated leaders of the other constituent countries of Yugoslavia, a multi-ethnic state that had been established in 1918. Slovenia, Croatia, and the Republic of Macedonia each declared independence from Yugoslavia in 1991, but Serbian forces forcefully opposed Croatia's independence, beginning the Yugoslav Wars. In 1992, Bosnia and Herzegovina also declared independence. As in Croatia, a significant minority of Serbs opposed to independence lived in Bosnia and Herzegovina, and the Bosnian War began between proponents and opponents of independence. Ethnic cleansing campaigns