My brand of leadership, which is very focused on bringing people together, solving problems - it's what I have always tried to do - just had a hard time being as powerfully compelling in the campaign as I think it has been in previous years for other candidates.

When you are engaged in both trying to kill and capture the enemy and get support from the local population, you have to be always asking yourself, "Is what I'm doing keeping that balance?"

Well, I think, by definition, all power has limits.

Women are the world's most underused resource.

We will do everything in our power to protect our allies, South Korea and Japan, including installing even more missile defense.

The first step is to take weapons off the streets and to put more police on them.

Over the years, so many of the barriers that prevented people from getting married, crossing lines of faith or color or ethnicity have just disappeared. Because what's important is: 'Are you making a responsible decision? Have you thought it through? Do you understand the consequences?' And I think in the world that we're in today we need more of that.