A gimme question which he answered correctly, of course. I’m posting it not because it’s newsworthy in itself but because it’d be nice to push this subject onto the national agenda and have Hillary, Obama, and Silky enjoy a golden deer-in-the-headlights moment when someone finally broaches it with them.

Republican presidential candidate Mitt Romney says that if terrorists detonated a nuclear bomb in a U.S. city while he was president he would retaliate “in a very dramatic and clear way.”…

“The answer is you would retaliate and you’d retaliate in a very dramatic and clear way. I don’t want to be terribly more specific than that,” the former Massachusetts governor said.

“But there’s no question that people understand that the reason that we have the thousands upon thousands of nuclear warheads we have is that we intend to protect ourselves. And I would never shrink from protecting the American nation, the American people, nor shrink from retaliation if somebody used something as awful as a nuclear device. We will be safe.”

The key is preventing nuclear proliferation, Romney said. He cited Iran, which has been accused of seeking to develop nuclear weapons, a charge its leaders have denied while claiming it’s interested only in a nuclear energy program.

I wrote about this subject a few months ago but I’ll pose the exit question again: If it happens and you can’t ID the perpetrators, what do you do?