The Future of Revolutions

The 20th Century was pre-eminently an age of revolutions - in Russia, China, Cuba and elsewhere - that fundamentally transformed the nature of politics and social arrangements. As we enter a new century, has it got harder for revolutions to occur in the new unipolar, globalized world? Here, John Foran asks: is the era of revolution over?; if so, why?; and if not, what might the revolutions of the future?