As a matter of fact, the African Union itself estimated that every year corruption alone costs Africa $148 billion. If African leaders could cut that in half, they'll find more money than what Tony Blair is trying to raise for them.
You yourself are the teacher, and the pupil, you're the master, you're the guru, you are the leader, you are everything! And, to understand is to transform what is.
Likewise the leader of any state has to do the same, he has to enforce Shariah firmly, for he will be held in account later in the afterlife if he fails.
The best form of leadership is to be conscious of the leadership potential with the followers and to let them unleash this potential in a spontaneous way. When a great leader accomplishes this task with effortless ease, the followers say, "We did it ourselves."
When the leader is morally weak and his discipline not strict, when his instructions and guidance are not enlightened, when there are no consistent rules, neighboring rulers will take advantage of this.