The United States has always imagined that its identity as a nation is insulated from violent interventions abroad, as if a line between domestic and foreign affairs could be neatly drawn. Yet this book argues that such a distinction, so obviously impracticable in our own global era, has been illusory at least since the war with Mexico in the mid-nineteenth century and the later wars against Spain, Cuba, and the Philippines. In this book, Amy Kaplan...