In America, we've been around for 240 years. We've had free and fair elections. We've accepted the outcomes when we may not have liked them. And that is what must be expected of anyone standing on a debate stage during a general election.

I think what President [Barack] Obama has done is to chart a steady course. When I was there, the first four years we had a lot of cleanup to do. We inherited a lot of bad feelings from the [George W.] Bush administration, and much of what I spent my time doing was traveling around the world reassuring friends and allies.

I believe I am a work horse. I believe that that is what our country needs. We need a president who will roll up our sleeves collectively as a nation and tackle the problems that we confront.

The cavalier casual way that Donald Trump talks about nuclear weapons is not only frightening but it goes counter to more than 70 years of bipartisan, presidential leadership of Republicans and Democrats who believed that we have to prevent other countries from getting nuclear weapons and we have to do what we can to decrease the number of nuclear weapons in the world.

This killer [in Orlando] was interviewed by the FBI three times and I'm not going to second guess what career law enforcement professionals do everyday to defend our nation. But we need to look carefully at this. Should we have a broader database? You know, someone comes to the attention of FBI not once but three times, does that suggest that local law enforcement needs to know.

I hope by the time I am president that we will have pushed ISIS out of Iraq.

I've had extraordinary good luck with my health, other than a broken elbow.