By 2016, the people who had looked to [Barack] Obama for change were looking somewhere else.

Operation Iraqi Freedom is over, and the Iraqi people now have lead responsibility for the security of their country

The more we can encourage participation, I think the better off we are.

Rather take that moral sense and apply it to the particulars of a job that is going to test those ethical and moral precepts differently than if you're a professor, or a business person, or a dad. And if I were not comfortable with the judicious use of our military to protect the American people, than I shouldn't have run for president. And having said that, I do think that the wisdom of a [Martin Luther] King or a [Mahatma] Gandhi can inform my decisions.

No single nation should pick and choose which nations holds nuclear weapons. And that's why I strongly reaffirmed America's commitment to seek a world in which no nations hold nuclear weapons.

I try to make it a rule not to meddle in other people's politics.

No other country in the world does what we do. On every issue, the world turns to us, not simply because of the size of our economy or our military might - but because of the ideals we stand for, and the burdens we bear to advance them.