BUSH: Hi, Linda.

GRABEL: President Bush, during the last four years, you have made thousands of decisions that have affected millions of lives. Please give three instances in which you came to realize you had made a wrong decision, and what you did to correct it. Thank you.

BUSH: I have made a lot of decisions, and some of them little, like appointments to boards you never heard of, and some of them big.

And in a war, there's a lot of -- there's a lot of tactical decisions that historians will look back and say: He shouldn't have done that. He shouldn't have made that decision. And I'll take responsibility for them. I'm human.

But on the big questions, about whether or not we should have gone into Afghanistan, the big question about whether we should have removed somebody in Iraq, I'll stand by those decisions, because I think they're right.
...

Now, you asked what mistakes. I made some mistakes in appointing people, but I'm not going to name them. I don't want to hurt their feelings on national TV.

President Obama, today:

I have repeatedly made it clear -- in public with the American people, and in private with my national security team -- that I will hold my staff, our agencies and the people in them accountable when they fail to perform their responsibilities at the highest levels.

Now, at this stage in the review process it appears that this incident was not the fault of a single individual or organization, but rather a systemic failure across organizations and agencies. That's why, in addition to the corrective efforts that I've ordered, I've directed agency heads to establish internal accountability reviews, and directed my national security staff to monitor their efforts. We will measure progress. And John Brennan will report back to me within 30 days and on a regular basis after that. All of these agencies -- and their leaders -- are responsible for implementing these reforms. And all will be held accountable if they don't.

Moreover, I am less interested in passing out blame than I am in learning from and correcting these mistakes to make us safer. For ultimately, the buck stops with me. As President, I have a solemn responsibility to protect our nation and our people. And when the system fails, it is my responsibility.

More this weekend, but this could not wait.