Overview: 2010/04/13 Headlines: Afghans Protest Deadly US Attack on Passenger Bus; Obama Pushes Iran Sanctions at Nuke Summit; Interim Kyrgyz Gov't Assures US on Military Base; Up to 71 Killed in Pakistan Military Strike; Indigenous Amazonians Protest Brazilian Dam Project; Japanese Journalist Killed in Thai Clashes; Stern to Step Down from SEIU; Senate Moves Toward Restoring Jobless Benefits; W. Va. Blast Probe to Focus on Nearby Mines; Investors Call for Ouster of Massey CEO; ProPublica Becomes First Online Pulitzer Winner