The United States, as the dominant power in the Western Hemisphere, must always prevent any other power from becoming equally dominant in the Eastern Hemisphere. Moreover, as a liberal maritime power, the United States must seek to protect the sea lines of communication that enable world trade. It must also seek to protect both treaty and de facto allies, and especially their access to hydrocarbons. These are all interests that, while not necessarily contradictory to human rights, simply do not operate in the same category. Because the United States is a liberal power, its interests—even when they are not directly concerned with human rights—are generally moral. But they are only secondarily moral. For seeking to adjust the balance of power in one’s favor has been throughout history an amoral enterprise pursued by both liberal and illiberal powers. Nevertheless, when a liberal power like the United States pursues such a goal in the service of preventing war among major states, it is acting morally in the highest sens

