...During the presidential campaign, Sen. John Kerry ridiculed the idea that the War on Terror could end in a definitive victory. The most that one could do, he argued, was to reduce terrorism to the level of a nuisance like prostitution, the Mafia and the illicit-drug trade. Bush, however, is offering something with which to measure success or failure in this war: the spread of democracy. If, when Bush leaves office in four years, the region holds more democracies, he could claim some success. If not, he'd have to admit failure. This, of course, is a high-risk strategy: Democracy has...