Opinion (William A. Niskanen): Don't start another war

President Bush continues to rattle the saber with Iran, declaring openly that Iranian weapons are killing U.S. troops in Iraq, and appearing to establish a pretext for possible military action. But a few blocks east, Nancy Pelosi and Hillary Clinton have asserted that Bush does not have the authority to broaden the war beyond Iraq's borders.

President Bush wisely warned us that the early withdrawal of U.S. forces from Iraq might lead to a larger regional war, and we should take steps to avoid that. So why does he seem to be preparing for a war with Iran, and maybe Syria?

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