Overview: 2013/05/17 Headlines: Guantánamo Hunger Strike Enters 100th Day; 30 Prisoners Being Force-Fed; Number of Syrian Refugees Tops 1.5 Million; Obama: U.S. Won't Take Unilateral Action Against Assad; Obama Defends Secret Subpoena of Associated Press Phone Records; DOJ Releases Completely Blacked-Out Memo on Surveillance of Text Messages; Obama Appoints New Acting IRS Commissioner; Audit of Witness Protection Program Finds Gaps in Tracking of Terror Suspects; Note by Boston Bombing Suspect Cites U.S. Wars in Iraq, Afghanistan as Motive; 9 Afghan Civilians, 6 Americans Killed in Kabul Suicide Bombing; Cause of Texas Fertilizer Plant Explosion Still Unknown 1 Month Later; 3rd U.S. Military Official Tasked with Sexual Assault Prevention Is Accused of Abuse; Senate Panels Advance Obama Nominees for Labor Dept.