Plot: 2011/04/18 Headlines: Gaddafi Forces Accused of Firing Cluster Bombs; 17 Reportedly Killed in Attack on Misurata; TEPCO Seeks 9 Months to Repair Plant; Clinton Visits Japan; House Approves GOP Spending Bill; Report: Walker to Propose Emergency Management Bill; Michigan Emergency Managers Target Elected Officials, Teachers; Bid to Repeal Ohio Anti-Worker Law Approved; Study: Dangerous Chemicals Used in Natural Gas Fracking; Georgia Approves Anti-Immigrant Law; 13 Killed in Syria Crackdown on Protests; Cables: U. S