VENGEANCE, THE DRIVING FORCE IN WAR AND TERRORISM: WITHOUT THE DESTRUCTIVE EMOTIONS THAT FUEL VIOLENCE, HOWEVER, WAR AND TERRORISM WOULD END. THEIR ESSENCE MAY ACTUALLY BE HATRED OR THE PERENNIAL THIRST FOR REVENGE

That war provokes hostile emotions--hatred, vengefulness, rage--is a dime-store truism. Two centuries ago, military theorist Carl von Clausewitz wrote that in war 'the emotions cannot fail to be involved.' As [...]