We Americans are not an inherently more violent people than folks in other countries. We're not inherently more prone to mental health problems. The main difference that sets our nation apart is what makes us so susceptible to so many mass shootings is that we don't do enough, we don't take the basic commonsense actions to keep guns out of the hands of criminals and dangerous people. What's different in America is it's easy to get your hands on a gun.

The biggest threat, when it comes to climate change and pollution, isn't going to come from us because we only have 300 million people. It's going to come from China with over 1 billion people and India with over 1 billion people.

If you want a model for what is possible, if you want to see how to build a peaceful and prosperous and dynamic society, then look at Berlin and look at Germany.

I do not accept that we cannot find a common sense way to preserve our traditions, including our basic second amendment freedoms and the rights of law abiding gun owners, while at the same time reducing the gun violence that unleashes so much mayhem on a regular basis.

We've said to the Iranians all along . . . we still remain open to diplomacy. But it's been very clear that the Iranians don't want to engage with us.

Physically, I feel probably as good as I've ever felt. And I've got as much energy as I ever did. But what you feel after eight years - and I think you'd feel this no matter what, but anytime you have a big transition, it gets magnified - is time passes.

As I said in my State of the Union address ensuring the security of the United States and the safety of our people demands a smart, patient and disciplined approach to the world.