Mr. X was a Serb nationalist. He was into power in 1989, and was not very keen about the Albanians that lived in Kosovo and wanted the Albanians to accept the political dominance of the Serbs. He pursued Serbian nationalist policies that contributed to the breakup of the socialist Yugoslav federation. Under his regime, hundreds of Albanians were killed in Kosovo, and over 800,000 Albanians were thrown out of their province. Who is Mr. X?