The Iraq war has plummeted in popularity, but the war movie “300” is a hit. “The problem is that our popular culture doesn’t want to talk about the consequences of war. We have reality TV but it doesn’t serve up in-depth coverage of the three struggles that are going very badly for the United States: the raging war in Iraq, the chronic war in Afghanistan and the still-diplomatic war with Iran over that state’s nuclear ambitions. War in the abstract is entertaining, though.”