Given the level of anti-Americanism in the world, given the level of frustration with the United States throughout the Muslim world, you've got a homegrown attack or you have a nuclear explosion in the air that is not a test somewhere. Those are still the biggest threats out there.
I found out about reviews early on. They're mostly written by sad men on bad afternoons. That's probably why I'm less angry than some writers, who are so narcissistic they consider every line of every review, even a thoughtful one, as major treason.