Decade 9/11: Lawrence Wright and Fawaz Gerges

Lawrence Wright, staff writer for the New Yorker and the author of the Pulitzer Prize-winning book The Looming Tower: Al Qaeda and the Road to 9/11 and the director of the Middle East Center at the London School of Economics and author of The Rise and Fall of Al-Qaeda, Fawaz Gerges, discuss the battle against terrorism over the last decade.