As Iraqi forces continue the liberation of Mosul, I'm pleased that NATO will be meeting the commitment we made in Warsaw to begin training additional forces in Iraq.

For the sake of our security, our economy and our planet, we must have the courage and commitment to change.

I'm suspicious of too much certainty in the pursuit of understanding just because I think people are limited in their understanding.

Let's say hypothetically, knowing what we know now about public policy, that we could close the education gap so that it was only a couple percentage points, and we could make sure that hiring barriers and educational barriers had been leveled down, and unemployment among African Americans right now instead of being double was only 10 percent higher than white unemployment - if we got to that point , America as a whole would be a lot richer.

I do think that saving the economy was a pretty big deal. We did a lot of stuff early that ended up having an impact. I believe that the work we've done in moving our energy future in a cleaner direction is going to stick even if some of the individual steps that we took are reversed by future administrations. I think that it's embedded itself in the economy.

For more than four decades, the Libyan people have been ruled by a tyrant - Moammar Gaddafi. He has denied his people freedom, exploited their wealth, murdered opponents at home and abroad, and terrorized innocent people around the world - including Americans who were killed by Libyan agents.

Today, we are closer to fulfilling America's promise of economic and social justice because we stand on the shoulders of giants like Dr. King, yet our future progress will depend on how we prepare our next generation of leaders. We must fortify their ladders of opportunity by correcting social injustice, breaking the cycle of poverty in struggling communities, and reinvesting in our schools. Education can unlock a child's potential and remains our strongest weapon against injustice and inequality.