It's been five years since popular uprisings toppled dictators in Egypt and other Arab countries. Except in Tunisia, Democracy has not taken hold. Egypt's new military regime may be worse than the old one; Libya is in chaos; millions of Syrians are fleeing civil war. In 2011, diverse groups were able to unify after years of repression, only to be divided again by their different interests and the need for order. But revolutions take time. We talk with authors of two new books saying it's premature to declare that the "Arab Spring" was a failure.