Kosovo could be a real strike against McCain who supported Clinton's war against Kosovo and who now supports Bush's recognition of its independence. In fact the only major candidate who'd be unaffected by too much focus on Kosovo among the punditry would be Obama.
Clinton's war was not against Kosovo. It was against Serbia and Serbia's intervention in Kosovo's bid for autonomy.
Remember that this all started with the breakup of Yugoslava and Belgrade's desire to keep its borders intact. Bosnia, Herzogovenia, Crotia, Slovenia, Macedonia, and Serbia were all area's (Some were independent states)that the communists and Tito forced into a single artificial state.
After the fall of the Soviet Union, many Americans and Europeans saw the breakup of those area's into their independent states as a natural consequence. Much like the breakup of the many states that made up the Soviet Union. Unfortunately, for Serb Nationalists, that breakup extends to within the borders of Serbia itself. Serbia, Montenegro, Kosovo and Vojvodina were/are all part of the Serbian state that existed just before World War I.
An ealier statement in this thread stated something to the effect that people make the mistake that there is a 'good' side an a 'bad' side in this affair. It is certainly much more clouded than that. There are many factions on both sides andd there are those among each side that we would find ourselves in agreement with and abhored by.
Just to give one a idea of how convoluted this area's history truly is, here is an excerpt from wikipedia:
For centuries, shaped at cultural boundaries between East and West, a powerful medieval Serbian kingdom - later renamed an empire - occupied much of the Balkans. The modern state of Serbia emerged in 1817 following the Second Serbian Uprising. Later, it expanded its territory further south to include Kosovo and Metohija and the regions of Raška and Vardar Macedonia. The Syrmia region united with Serbia on November 24, 1918 and they were joined by Vojvodina (formerly an autonomous Habsburg crownland named Serbian Voivodship and Tamiš Banat) the following day after it proclaimed its secession from Austria-Hungary. The current borders of the country were established following the end of World War II, when Serbia became a federal unit within the Socialist Federal Republic of Yugoslavia. Serbia became an independent state again in 2006, after Montenegro left the union which was formed after the dissolution of Yugoslavia in 1990s.
In short this area of the world is a (expletive deleted) mess.