Christopher Hemmer examines America's grand strategic choices between 1914 and 2014 using four recurring debates in American foreign policy as lenses. First, how should the United States balance the trade-offs between working alone versus working with other states and international organizations? Second, what is the proper place of American values in foreign policy? Third, where does the strategic perimeter of the United States lie? And fourth, is time on the side of the United States or of its enemies?