If there's one thing I would like to see, it'd be for us to be able to price the cost of carbon emissions.

There are very few moments in our lives where we have the privilege to witness history taking place. This is one of those moments. This is one of those times.

Ultimately, only diplomacy can bring about a durable solution to the challenge posed by Iran's nuclear program. As President and Commander in Chief, I will do what is necessary to prevent Iran from obtaining a nuclear weapon. However, I have a profound responsibility to try to resolve our differences peacefully, rather than rush towards conflict.

We have to focus on how do we ensure the economy works for everybody, and not just a few.

As the United States begins a new chapter in our relationship with Cuba, we hope it will create an environment that improves the lives of the Cuban people, not because it is imposed by us, the United States, but through the talent and ingenuity and aspirations, and the conversations among Cubans from all walks of life so they can decide what the best course is for their prosperity.

America does not accept the legitimacy of continued Israeli settlements.

A relentless focus on the outward markers of success can lead to complacency. It can make you lazy.