I think our basic principle that this is a free market system and that that has worked for us, that it creates innovation and risk taking, I think that's a principle that we've gotta hold to as well. But what I don't wanna do is get bottled up in a lot of ideology and is this conservative or liberal. My interest is finding something that works.

As the world's largest economy and second-largest carbon emitter, as a country with unsurpassed ability to drive innovation and scientific breakthroughs, as the country that people around the world continue to look to in times of crisis, we've got a vital role to play. We can't stand on the sidelines. We've got a unique responsibility.

I will work every single day to make sure that America continues to be the greatest nation on earth.

But at a time when our discourse has become so sharply polarized - at a time when we are far too eager to lay the blame for all that ails the world at the feet of those who think differently than we do - it's important for us to pause for a moment and make sure that we are talking with each other in a way that heals, not a way that wounds.

We need not throw away 200 years of American jurisprudence while we fight terrorism. We need not choose between our most deeply held values, and keeping this nation safe.

Without a deal [with Iran], the international sanctions regime will unravel with little ability to reimpose them. With this deal, we have the possibility of peacefully resolving a major threat to regional and international security. Without a deal, we risk even more war in the Middle East and other countries in the region would feel compelled to pursue their own nuclear programs, threatening a nuclear arms race in the most volatile region in the world.

I do think that this whole area of cyber is something that at an international level we have to work on and develop frameworks and international norms so that we don't see a cyber arms race.