The word 'global' has become so frequently used in Western strategic debate that is has almost become background music. On one level, overuse robs it of resonance. But on another, it might be contributing to the conceptual and rhetorical overstretch that has led the US to overextend itself. Consider just one recent example. In making the case recently for maintaining the Pax Americana, the expansive grand strategy in which the US tries to hold on to unipolar supremacy with a worldwide military...