As Obama Apologizes for Deaths of Hostages in Drone Strike, Does the U.S. Know Who It Is Killing? Pentagon Speeds Efforts to Resettle Guantanamo Prisoners Ahead of Vote on Two-Year Transfer Ban; Watch: Explosive Footage from Inside Rikers Jail Shows Guard Beating Teen Accused of Backpack Theft; A People Expunged: Marking the 100th Anniversary of Armenian Genocide amid Ongoing Turkish Denials.