In responding to the attempted bombing of an airliner on Christmas Day, Sen. Dianne Feinstein voiced the feelings of many when she said that to prevent such situations, "I'd rather overreact than underreact." This appears to be the consensus view in Washington, but it is quite wrong. The purpose of terrorism is to provoke an overreaction. Its real aim is not to kill the hundreds of people directly targeted but to sow fear in the rest of the population. Terrorism is an unusual military tactic in that it depends on the response of the onlookers. If we are not terrorized, then the attack didn't work. Alas, this one worked very well.

 I could not agree more.  The rest of Zakaria's piece is dead on as well, this paragraph in particular:

As for the calls to treat the would-be bomber as an enemy combatant, torture him and toss him into Guantanamo, God knows he deserves it. But keep in mind that the crucial intelligence we received was from the boy's father. If that father had believed that the United States was a rogue superpower that would torture and abuse his child without any sense of decency, would he have turned him in? To keep this country safe, we need many more fathers, uncles, friends and colleagues to have enough trust in America that they, too, would turn in the terrorist next door.