The underlying cause of all the unrest in not just the middle east but the world is the the skyrocketing cost of basic food. The people, who were poor to begin with, are finding they cannot afford to buy food and this is resulting in people rising up aginst the one thing they can, the rulers. Some countries are buying up suprplus crops to feed their people in expectation of continued increases. The new leaders in Tunsisa and Egypt will have to address this quickly. China is facing a drought in its grain producing regions and they are anticipated to be big buyers on the international market. Grain Prices Rally Toward 2008 Records on Shrinking World Supply - Businessweek So we can expect more unrest and possible regime changes throughout the world as this food crisis continues. Are we reaching the point where we cannot feed our population?