When it comes to the Balkans, most people quickly become lost in the quagmire of struggle and intractable hatred that consumes that ancient land today. Many assume that the genesis of the past ten years of atrocity in the region might have had something to do with Tito and his repressive Yugoslav regime, or perhaps with the assassination of Franz Ferdinand in 1914. The seeds were really planted much, much earlier, on a desolate plain in Kosovo in...