Bob Schieffer: Let's not rush response to NSA revelations

As I listened to the president's speech Friday, I kept thinking just how much the world has changed.

George Bush won the presidency in 2000 after a campaign in which terrorism -- and for that matter, foreign policy -- got almost no attention. 

Yet the Bush presidency was defined by 9/11 and America's reaction to it.

Thousands of Americans were sent into harm's way because the intelligence on which decisions were made was simply wrong.

We should not forget that. If warp-speed advances in technology have given us the ability to do better, we should embrace that, not diminish it.

The president gave an excellent outline of the new challenges, but left the hard part for later -- for one, deciding where the vast trove of data the government is now able to collect should be stored.

To me, a little delay is just as well. These questions are so complex they must be based on more than emotional reaction to revelations suddenly thrust upon us. Let's take the time to think this through.

In the meantime, here is my tip to German Chancellor Merkel: the way to keep others from picking up sensitive information on your cell phone is to stop talking on it.

As the president said, "There is a reason why BlackBerries and iPhones are not allowed in the White House situation room."