President Obama has made it his mission that we welcome our troops home with care, and concern, and the respect they deserve. That is how an exceptional nation says "thank you" to its most exceptional men and women.

Let me just say you could end this violence within a very short period of time, have a complete ceasefire - which Iran could control, which Russia could control, which Syria could control, and which we and our coalition friends could control - if one man would merely make it known to the world that he doesn't have to be part of the long-term future; he'll help manage Syria out of this mess and then go off into the sunset, as most people do after a period of public life. If he were to do that, then you could stop the violence and quickly move to management.

Just the fact that we can't pass budgets in our Congress, just the fact that we are gridlocked in our own democracy, the fact that everybody who travels can see that we're not investing in our airports, in our rail, in our infrastructure and so forth, people are noticing a United States that is not getting the job done in some ways.

I do think that it's really important for leaders of countries to be very clear and careful in the statements they make because their words are weighed extremely carefully by other countries, and you have to create a continuity of seriousness and of credibility in order to be able to be taken seriously and get things done.

I will not stop in our efforts to hunt down and kill the terrorists.

I mean, all of these things that [Bashar Assad] has done, there's no way even if President Obama wanted to just play along that you could actually achieve peace, because there are 65 million Sunni in between Baghdad and the border of Turkey, Syria, and Iraq, who will never, ever again accept Assad as a member - as a legitimate leader.

We do not need more division. We certainly do not need something as complex and emotional as Vietnam reduced to simple campaign rhetoric.