Iran's nuclearization is the greatest single national security threat America faces.

My view is that we don't know what's causing climate change on this planet. And the idea of spending trillions and trillions of dollars to try to reduce CO2 emissions is not the right course for us.

We still believe in the America that is a land of opportunity and a beacon of freedom. We believe in the America that challenges each of us to be better and bigger than ourselves.

President Obama instituted the most anti-growth, anti-investment, anti-jobs measures that we have seen in our lifetime. Now he called his agenda ambitious, I call it reckless.

I will insist on a military so powerful no one would ever think of challenging it.

I'm optimistic about the future. I'm excited about our prospects as a nation. I want to see peace. I want to see growing peace in America. It's our objective.

And fifth, we will champion small businesses, America's engine of job growth. That means reducing taxes on business, not raising them. It means simplifying and modernizing the regulations that hurt small business the most. And it means that we must rein in the skyrocketing cost of healthcare by repealing and replacing Obamacare.