 Unrest and eventual collapse of Marxism–Leninism also occurred in Yugoslavia, although for different reasons than those of the Warsaw Pact.The death of Josip Broz Tito in 1980 and the subsequent vacuum of strong leadership allowed the rise of rival ethnic nationalism in the multinational country.The first leader to exploit such nationalism for political purposes was Slobodan Milošević, who used it to seize power as president of Serbia and demanded concessions to Serbia and Serbs by the other republics in the Yugoslav federation.