Why are the countries of sub-Saharan Africa the poorest in the world? One reason is the set of ill-designed development strategies that the International Monetary Fund (IMF) and the World Bank have implemented in the region for nearly half a century. But the centuries-old culture of leadership that is ingrained in many African societies has played an equally disastrous role.

Indeed, the vast majority of African rulers regard their countries as their personal possessions, to be used as they see fit. This conception of power led in past centuries to kings handing over their subjects to slave traders. Nowadays, leaders squander their countries' resources and revenues, leaving the majority of their populations mired in poverty, disease, hunger, war and hopelessness.

The oil rush currently taking place in West Africa is a perfect illustration of the problem. Instead of being an asset, oil has become a liability that generates poverty, corruption, ethnic conflict and ecological disasters.