It's important to make sure that governments have some checks on what they do, that people can oversee what's being done so the government doesn't abuse it.

Justice needs to be served, what I think people of Baltimore want more than anything else is the truth. That's what people around the country expect.

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.

Our nation honors its unbroken line of fallen heroes - and I see many of them in the audience here today.

As you might imagine, if you're a teenager having a couple of people with microphones and guns always following you around, that could grate on them. But you know, they've handled it with grace and I give Michelle [Obama] most of the credit for how well they've done, but I also just think they are graceful, good young, young women.

Everything we've done has been designed to make sure that we address that number one priority. That's what the sanctions regime was all about. That's how we were able to mobilize the international community, including some folks that we are not particularly close to, to abide by these sanctions. That's how these crippling sanctions came about, was because we [USA] were able to gain global consensus that Iran having a nuclear weapon would be a problem for everybody.

Change is never easy, but always possible.