Hints：Goodluck Jonathan，Sarki Mukhtar，Lieutenant General Aliyu Gusau，Olusegun Obasanjo，Umaru Yar’Adua，Nigerian，Fulani
Acting President Goodluck Jonathan fired National Security Advisor Sarki Mukhtar and replaced him with retired Lieutenant General Aliyu Gusau. Gusau held that post under former president Olusegun Obasanjo and is seen by many as a potential presidential candidate in next year’s election, having fini…