President Obama's first response to the protests in Iran was silence, followed by a cautious, almost neutral stance designed to avoid "meddling" in Iranian affairs. I am reminded of Ronald Reagan's initially neutral response to the crisis following the Philippine election of 1986, and of George H.W. Bush's initially neutral response to the attempted coup against Mikhail Gorbachev in 1991. Both Reagan and Bush were able to abandon their mistaken neutrality in time to make a difference. It's not too late for Obama to do the same.