What happens if the next failed terrorist is from, say, Germany?

President Obama, acting just minutes after a Yemeni group affiliated with Al Qaeda claimed responsibility for the airplane bombing attempt over Detroit on Christmas, declared Monday that the United States would continue to press its accelerated offensive against terror cells in Yemen and elsewhere in the world.

“This was a serious reminder of the dangers we face and of the nature of those who threaten our homeland,” Obama said of the Dec. 25 incident aboard a Northwest Airlines flight from Amsterdam. “We do not yet have all the answers about this latest attempt, but those who would slaughter innocent men, women and children must know that the United States will do more than simply strengthen our defenses.

There is no defense capable of stopping everyone willing to trade his life for yours.