The September 11, 2001, attacks on the World Trade Center and the Pentagon prompted a fundamental shift in the American government's approach to Islamic terrorism.

I found 'The Twin' sitting on a coffee table at a writers' colony in 2009. It carried praise from J.M. Coetzee. That seemed ample justification for using it to avoid my own writing. I finished it - weeping - a day later, and I've been puzzling over its powerful hold on me ever since.

So the premise of 'The Submission' is that there's an anonymous competition to design a 9/11 memorial and it's won by an American Muslim, an architect born and raised in Virginia, and his name is Mohammad Khan.

I read Claire Messud's 'The Emperor's Children,' I read Joseph O'Neill's 'Netherland' - but to me, they're not 9/11 novels. In 'The Emperor's Children,' 9/11 felt to me like a piece of the plot; the novel wasn't wrestling with what 9/11 meant. And 'Netherland' felt the same way. I liked both books a lot but I don't see them as 9/11 novels.

As a novelist, you deepen your characters as you go, adding layers. As a reporter, you try to peel layers away: observing subjects enough to get beneath the surface, re-questioning a source to find the facts. But these processes aren't so different.

There were in life rarely, if ever, "right" decisions, never perfect ones, only the best to be made under the circumstances.

The September 11, 2001, attacks on the World Trade Center and the Pentagon prompted a fundamental shift in the American government's approach to Islamic terrorism.