Barely a year after the self-immolation of a young fruit seller in Tunisia, a vast wave of popular protest has convulsed the Middle East, overthrowing long-ruling dictators and transforming the region's politics almost beyond recognition. But the biggest transformations of what has been labeled as the "Arab Spring" are yet to come.

An insider to both American policy and the world of the Arab public, Marc Lynch shows that the fall of particular leaders is but the least of the changes that will emerge from months of unrest. The far-ranging implications of the rise of an interconnected and newly-empowered Arab populace have only begun to be felt. Young, frustrated Arabs now know that protest can work and that change is possible. They have lost their fear - meanwhile their leaders, desperate to survive, have heard the unprecedented message that killing their own people will no longer keep them in power. Even so, as Lynch reminds us, the last wave of region-wide protest in the 1950s and 1960s resulted not in democracy, but in brutal autocracy. Will the Arab world's struggle for change succeed in building open societies? Will authoritarian regimes regain their grip, or will Islamist movements seize the initiative to impose a new kind of rule?