As Americans pick a president, one key criterion is how the war on terror is going. Is President Bush correct in his positive view or Senator Kerry in his negative one?This same debate, interestingly, is also taking place within conservative circles, where analysts sharing the same basic outlook - that Americans are fighting for their very existence - come to dramatically different conclusions. Consider the contrasting views of two important voices on the right, Mark Helprin and Tod Lindberg.Mr. Helprin, author of such powerful novels as A Soldier of the Great War and Winter's Tale, writes a despairing analysis in...