Rivers Governor's Chief of Staff Resigns Amid Political Crisis
• Chidi Amadi, Chief of Staff to Rivers Governor Fubara, resigns amid state's political crisis
• Amadi was a loyalist of former Gov. Wike, Fubara's political rival
• Speculation that Edison Ehie, former factional House Speaker, could replace Amadi
• Ehie warned appointing him would escalate Fubara-Wike crisis
• Despite crisis, Gov. Fubara says he's committed to finishing his term