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A greater U.S. role will not render Syria an American-allied democracy. That possibility, if it ever existed, has long been lost. But continued U.S. inaction risks leaving Syria at the mercy of Iran and Sunni extremists whose intolerance, and hatred of the U.S., dwarfs any concerns they may have for the well- being of Syria and its people. Such an outcome would haunt Syria, the Middle East and the U.S. for years to come.