Are Revolutions Transforming the Middle East?

Since the so-called "Arab Spring" began in Tunisia, there's been violence in that country. Today, Egypt's new military leaders formally criminalized protests. In Yemen, Bahrain, Syria and Libya, there's no telling what kinds of changes domestic upheaval will bring. Iran and Saudi Arabia may not see changes at all. What can be learned from Georgia, Ukraine and other countries that threw off the yoke of Communism? When is the old order vulnerable to a new generation of freedom-loving democrats? When are high expectations vulnerable to traditional realities?