Overview: 2013/04/26 Headlines: U.S. Officials Say Syrian Regime Likely Used Chemical Weapons; Iraq: Scores Killed in Sectarian Clashes; Obama Fails to Mention Iraq War in Speech Honoring Bush; New York Times Condemns Guantánamo as Hunger Strike Continues; Police Fire Tear Gas on Workers Protesting Bangladesh Building Collapse; Death Toll Nears 300; Russia: 38 Dead in Fire at Psychiatric Institution; Obama Attends Memorial for Blast Victims in West, Texas; U.N. Official Condemned for Highlighting Role of U.S. Policy in Boston Attacks; Renowned Newspaper "Egypt Independent" Releases Final Issue; U.N. Security Council Votes to Send Troops to Mali; Venezuela Arrests U.S. Filmmaker Accused of Fomenting Violence; Activist Joan Baez Sr., Mother of Famous Folk Singer, Dies at 100