Book excerpt: The Aspen Strategy Group's Policy Books is an annual series of pieces written by contemporary thought leaders on the most pressing U.S. foreign policy and national security issues. This edition is a collection of papers commissioned for the 2014 Aspen Strategy Group Summer Workshop, in Aspen, Colorado. On the occasion of the 30th anniversary of the Aspen Strategy Group (founded in 1984), the summer workshop convened a nonpartisan group of preeminent U.S.-Russia policy experts, academics, journalists, and business leaders. The group's policy discussions were guided by the papers in this volume, whose scope encompasses the history of the U.S.-Russia relationship, current developments in the Sino-Russian relationship, NATO and European responses to Russian aggression in Eastern Europe, energy considerations, areas of potential U.S.-Russia cooperation, and the broader question of U.S. national security and interests in the European region.