While the northern, majority Moslem, states implement Islamic law, they do not talk about setting up a separate Islamic state. This is because the oil is in the largely Christian south. The northerners are not militarily strong enough to conquer the south. In fact, more and more, the national police and army jobs are going to southerners. The Moslems are noticing this when the army and police are called in to stop religious fighting. The police and troops often side with the Christians.