To anyone out there who has ever been assaulted: You will never be alone. You are never alone. We have your back. I've got your back.

Around the world, Gandhi, Nelson Mandela -- what they did was hard. It takes time. It takes more than a single term. It takes more than a single president. It takes more than a single individual.

Even limited military actions end up carrying with them great costs and unintended consequences.

I remember having meetings with Republican senators who initially had been trying to engage [Obamacare] but saw that the politics of 'no' were growing inside the Republican Party.

Don’t ever let anybody tell you that your efforts don’t matter or that your voice doesn’t count. Don’t ever believe that you can’t make a difference. You have.

Just because Iran and Syria may recognize Assad's weaknesses doesn't necessarily mean that Assad recognizes his weaknesses.

Donald Trump is like Hillary Clinton said, a man you can bait with a tweet is not a man you can trust with nuclear weapons. You can`t do it.