Crisis in Somalia; Mubarak Trial; Nicholas Schmidle; Joby Warrick

Journalist David Muir of ABC and Valerie Amos, U.N. Emergency Relief Coordinator, report on the crippling drought and famine in Somalia. Journalists Anthony Shadid of The New York Times and Leila Fadel of The Washington Post report on the trial of former Egyptian President Hosni Mubarak for human rights violations and corruption. Journalist Nicholas Schmidle of The New Yorker describes the events that led to the death of Osama bin Laden and shares his story about that night. Pulitzer Prize-winning journalist Joby Warrick shares his new book, "The Triple Agent: The al-Qaeda Mole Who Infiltrated the CIA."