With the trial of Osama bin Laden drive Salim Hamdan underway in Guantanamo Bay, Cuba, writer Jonathan Mahler compares the proceedings those in Nuremberg after World War II. Nuremberg mattered, Mahler says, but Guantanamo is another matter in the eyes of the public. Guest: Jonathan Mahler, author and New York Times contributing writer. Mahler's book ?The Challenge: Hamdan v. Rumsfeld and the Fight Over Presidential Power? comes out next month.