Fiction: A nuclear strike on the U.S. is impossible.

As incredibly horrific as it would be and even to contemplate, here's a small extract of what former Secretary of Defense Robert S. McNamara had to say in the May/June 2005 issue of Foreign Policy magazine:

"Indeed, just last summer, at a meeting of the National Academy of Sciences, former Secretary of Defense William J. Perry said, “I have never been more fearful of a nuclear detonation than now.… There is a greater than 50 percent probability of a nuclear strike on U.S. targets within a decade.”