The best way to sum up Mitt Romney’s approach to foreign policy is: Build peace through strength rather than generate contempt through apology. Mr. Romney laid out this vision for American national security at the Virginia Military Institute on Monday. President Obama’s camp predictably dismissed this point of view as “outside of the mainstream and often to the right of even George W. Bush.” This is from the administration which has made targeted killings the centerpiece of its counterterrorism strategy. This is from the administration that has attempted— poorly —to make a legal case for assassinating U.S. citizens abroad. The...