Nigeria, Jan. 28 -- Northern Nigeria used to have a cult of power called the Kaduna Mafia. The Kaduna Mafia decided who would become the Nigerian president, which road to build, which to abandon, which industries to be cited and where. When it couldn't help but hand the reins of power to the south, it determined which weakest link to exploit. The 1976 assassination of Murtala Muhammed and the handing over of power to Olusegun Obasanjo explains this. If the Kaduna Mafia was bothered about the north-centric disposition of Obasanjo, it could have defiantly handed over the reins of the military government to Shehu Musa Yar'Adua, at that time a lieutenant colonel in the army. Nothing would have happened. When it handed power to Obasanjo, it ha...