Nigerian President Olusegun Obasanjo promised to deal “firmly” with kidnappers of foreign oil workers in the Niger Delta after a string of hostage takings and releases in recent days. Four oil workers kidnapped a week ago were released on Tuesday, and five others were freed Monday, when another four were also abducted. “We are going to be firm and say no to violence and hostage-taking,” Obasanjo responded, according to an official statement. Full Story