We need, from time to time, to use military force or all of the resources at our command in order to defend the nation and defend our friends. Sometimes, that requires us to take actions that generate controversy. I think there are probably some who actually believe, if we just go talk nice to these folks, everything is going to be OK. I don't think the world works that way.

I think you can not be blown off course by the fluctuations in the public opinion polls.

We were trying to get all of the planes down out of the sky. And we watched as the towers of the World Trade Center collapsed - something no one expected and anticipated. And you could sit there and see and be aware that thousands of people were at that moment being killed as a result of the terrorist attacks that struck the United States.

I worked for George Bush. I'm proud to have worked for him. I think that a lot of the most controversial things we did, that people didn't like and - and criticized us for, things like the terror surveillance program or the enhanced interrogation techniques, were things that allowed us to save lives.

I think the key that happened on 9/11 is we went from considering terrorist attacks as a law enforcement problem to considering terrorist attacks, especially on the scale we have on 9/11, as being an act of war.

I have not suggested there's a connection between Iraq and 9/11.

To bring the worst of the worst terrorists inside the United States would be cause for great danger and regret in the years to come. It is recklessness cloaked in righteousness, and would make the American people less safe.