The reality is that terrorists can attack any time at any minute, 24 hours a day, using a variety of techniques, in any place at all. And it's not possible to defend in every place, against every technique, against every conceivable approach. It means that you can't stop every terrorist attack. Innocent men, women and children are going to be killed if terrorists are determined to do it.

I tend over the years to have developed a certain hesitancy about believing that headlines tell the whole story.

Five days or five months, but it certainly isn't going to last longer.

The United States isn't going to do anything that it's not capable of doing. And if we do something, we'll be capable of doing it.

One of your tasks is to separate the 'personal' from the 'substantive.' The two can become confused, especially if someone rubs the President wrong.

At 78 years old, I am not surprised at much anymore. Germany has taken divergent positions before, so has France, so has England, so has the US.

What will follow will not be a repeat of any other conflict. It will be of a force and scope and scale that has been beyond what has been seen before.