WASHINGTON -- The resignation of Secretary of State Colin Powell sends a bad signal to the rest of the world. It means that right-wing ideologues who believe in pre-emptive war and who ignore international treaties will be in charge of U.S. foreign policy during President Bush's second term. The president apparently believes that his election victory is a mandate for his ill-advised "might-is-right" foreign policy. Considering the Iraqi quagmire, I doubt that is what the voters had in mind. If he pursues that track over the next four years, the United States will be even more alienated from friends and...