After the Cold War’s end and the collapse of the Russian Empire’s Soviet successor, war returned to the Balkans under very similar conditions to those that prevailed in the period before 1914, with aggressive nationalism ultimately reconfiguring the disintegrating Yugoslavia as six separate states. Of course, Serbian President Slobodan Milošević, whose call for a “Greater Serbia” triggered the war, was not alone: For a moment, Europe was in danger of reverting to the confrontation of 1914, with France and the United Kingdom supporting Serbia, and Germany and Austria favoring Croatia.