Lionel Shriver's new novel, called The New Republic, is actually an old manuscript with a star-crossed history. As Shriver explains in a prefatory note, this satire on (among other things) terrorism was finished in 1998, but, back then, publishers weren't interested. That was five years before Shriver's break-through novel, We Need to Talk About Kevin. Then, Sept. 11 happened: sincerity was in; irony was out. Publishers wouldn't touch this story that offered an ironic take on violent extremism.