Most of the countries in the Middle East and Africa have a population that is nearly 50% under 26, rising education levels, less tolerance for dictators, concentrated in urban areas, with access to mobiles, internet and social media like Twitter, ....a potent mix.

When a small country like Tunisia "tweets" a revolution, will the winds of change be amplified through the Sahara and travel south. A small tiny spark near combustible material, and you can get a fire going.