 This resulted in a surge of Slovene and Croat nationalism in response and the collapse of the League of Communists of Yugoslavia in 1990, the victory of nationalists in multi-party elections in most of Yugoslavia's constituent republics and eventually civil war between the various nationalities beginning in 1991.Yugoslavia was dissolved in 1992.The Soviet Union itself collapsed between 1990 and 1991, with a rise of secessionist nationalism and a political power dispute between Gorbachev and Boris Yeltsin, the new leader of the Russian Federation.