We know we can't stop every act of violence, every act of evil in the world, but maybe we could try to stop one act of evil, one act of violence.

Climate change constitutes a serious threat to global security, an immediate risk to our national security, and, make no mistake, it will impact how our military defends our country.

I will support Iraqis and Syrians fighting to reclaim their communities.

We have an obligation and a responsibility to be investing in our students and our schools.

No U.S. soldier ever dies in vain because they're carrying out the missions of their commander in chief. And we honor all the service that they've provided. Our troops have performed brilliantly. The question is for the next president, are we making good judgments about how to keep America safe precisely because sending our military into battle is such an enormous step.

The United Kingdom and the European Union will remain indispensable partners of the United States even as they begin negotiating their ongoing relationship to ensure continued stability, security and prosperity for Europe, Great Britain and Northern Ireland, and the world.

To look at long term trends in our economy, in our society, in the international sphere and using my best judgment, shape policies that will serve the American people, keep them safe, keep our economy growing, put people back to work.