It is by no means clear that the government in Tehran will crumble next week, next month, or even in the next decade — yet the same thing could have been said about Egypt, Tunisia, and Libya, ten years, a month, or even a week ago. Moreover, the benefits for the Middle East could be truly breathtaking: With Egypt on a perilous path to possible democracy, and with Turkey already a working democratic polity, the advent of democracy in Iran could easily tip the regional balance toward democracy, rule of law, and reason. By supporting the Green Movement along with other liberal movements throughout the Middle East, Obama can help to make it so.