Guarda su Altadefinizione. The political upheaval in North Africa is responsibility of the Western powers —especially of the United States and France— due to the exercise of a foreign policy based on practical and economic interests instead of ethical and theoretical principles, essential for their international politic strategies, which have generated a great instability that causes chaos and violence, as occurs in Western Sahara, the last African colony according to the UN, a region on the brink of war.