This definitive documentary, produced to mark the fifth anniversary of the Iraq invasion, analyzes in detail controversial topics surrounding the war, including Sept. 11, al-Qaeda, Guantanamo, Abu Ghraib, weapons of mass destruction and Fallujah. For years, the Peabody Award-winning series "Frontline" has brought viewers the real story of Afghanistan, Iraq and the dramatic political intricacies at the highest levels of the U.S. military.