We are committed to a world in which we keep America safe, but we recognize that our power doesn't just flow from our extraordinary military but also flows from the strength in our ideals and our principles and our values.

The success of our economy has always depended not just on the size of our gross domestic product, but on the reach of our prosperity; on the ability to extend opportunity to every willing heart - not out of charity, but because it is the surest route to our common good.

We forget now, but during his life, Dr. King wasn't always considered a unifying figure. Even after rising to prominence, even after winning the Nobel Peace Prize, Dr. King was vilified by many, denounced as a rabble rouser and an agitator, a communist and a radical. He was even attacked by his own people, by those who felt he was going too fast or those who felt he was going too slow; by those who felt he shouldn't meddle in issues like the Vietnam War or the rights of union workers.

I know there are problems that I say to myself, If maybe I was a little more gifted I might have been able to solve. But that's not because I believe what I did was a mistake. It's that maybe it required the talents of a Lincoln.

The problem is that, over time, big pieces of business that have to get done without leadership from Washington, don't get done.

America is governed by rules of law, and those are not ones that the President of the United States or anybody else can just set aside for the sake of expediency Even when we are deeply supportive of Turkish democracy, and even when we care deeply about any attempts to overthrow their government or any other illegal actions, we've got to go through a legal process.

If war explodes in Sudan, it could have a destabilizing effect that creates more space for terrorist activity that could eventually be directed at our homeland.