My head is so close to exploding from the day’s headlines and analysis each day, I approach a Frontline special analysis of Iraq with equal parts curiosity and trepidation. If this is a scandal of sorts, how many scandals ago is it? And does my brain have the capacity for unpacking yet another important, detailed timeline of who did what when why and to whom? If there’s such a mental condition as news fatigue, I think, after four decades in journalism, I finally may be suffering from it. Check local listings.