This four-volume collection brings together the academic writings of scholars who have examined America's foreign policy through the lens of diverse and often contradictory political traditions that stretch back to the founding of the United States, including liberalism, messianism, and isolationism. The selected papers address the historical development of these traditions, their application for understanding contemporary US foreign policy, the emergence of new traditions such as neoconservatism, and the perpetual existence of anti-Americanism.