Voices around the world, from Europe to America to Libya, are calling for U.S. intervention to help bring down Moammar Gadhafi. Yet for bringing down Saddam Hussein, the U.S. has been denounced variously for aggression, deception, arrogance and imperialism. A strange moral inversion, considering that Saddam's evil was an order of magnitude beyond Gadhafi's. Gadhafi is a capricious killer; Saddam was systematic. Gadhafi was too unstable and crazy to begin to match the Baathist apparatus: a comprehensive national system of terror, torture and mass murder, gassing entire villages to create what author Kanan Makiya called a "Republic of Fear." Moreover,...