And the prospect of a future where Kim Jong Un can put a nuclear weapon on a U.S. city is going to cause this nation to reassess the risks and rewards of the American Imperium.

First, some history.

"Why should Americans be first to die in any second Korean war?" this writer asked in 1999 in "A Republic, Not an Empire."

"With twice the population of the North and twenty times its economic power, South Korea … is capable of manning its own defense. American troops on the DMZ should be replaced by South Koreans."

This was denounced as neo-isolationism. And, in 2002, George W. Bush declared the U.S. "will not permit the world's most dangerous regimes to threaten us with the world's most destructive weapons."

Bluster and bluff. In 2006, Pyongyang called and raised and tested an atom bomb. Now Kim Jong Un is close to an ICBM.

Our options?