The shadow of a great power looms largest over its neighbors. But that doesn't mean countries nearby don't feel its presence, too. The nations along Europe's periphery -- the Baltics, the Balkans and Central and Southern Europe -- are acutely aware of this reality. At the fringes of the Continental core, these states are ripe for manipulation as Russia seeks to prevent the expansion of and sow discord within the European Union and the North Atlantic Treaty Organization, particularly over issues such as sanctions and military buildups....