Donald Trump is a person who has been very cavalier, even casual about the use of nuclear weapons.

My father was raised with brothers, he was a football player and a boxer, he was a chief petty officer in the Navy, he was a man of his times.

While there are few problems in today's world that the United States can solve alone, there are even fewer that can be solved without the United States.

I trust voters. Voters decide on whatever basis they think is important to them. I just want them to have a full range of information to make that decision.

You may have heard that Donald Trum has long refused to release his tax returns, the way every other nominee for president has done for decades. You can look at 40 years of my tax returns. I think we need a law that says, if you become the nominee of the major parties, you have to release your tax returns.

Great nations need organizing principles, and 'Don't do stupid stuff' is not an organizing principle.

I agree with the secretary [Hillary Clinton] that I think what has to happen - and let me just mention what King Abdullah of Jordan said. I think he hit the nail on the head.