Last August, the Republican presidential contender Mitt Romney performed what has become a quadrennial rite of passage in American presidential politics: he delivered a speech to the annual convention of the Veterans of Foreign Wars. His message was rooted in another grand American tradition: hyping foreign threats to the United States. It is "wishful thinking," Romney declared, "that the world is becoming a safer place. The opposite is true. Consider simply the jihadists, a near-nuclear Iran, a turbulent Middle East, an unstable Pakistan, a delusional North Korea, an assertive Russia, and an emerging global power called China. No, the world is not becoming safer."