Borderland tells the story of Ukraine. A thousand years ago it was the center of the first great Slav civilization, Kievan Rus. In 1240, the Mongols invaded from the east, and for the next seven centureies, Ukraine was split between warring neighbors: Lithuanians, Poles, Russians, Austrians, and Tatars. Again and again, borderland turned into battlefield: during the Cossack risings of the seventeenth century, Russia's wars with Sweden in the...