One of the great things about the United States is that when it comes to world affairs, the president obviously is the leader of the Executive Branch, the Commander-in-Chief, the spokesperson for the nation, but the influence and the work that we have is the result not just of the president, it is the result of countless interactions and arrangements and relationships between our military and other militaries, and our diplomats and other diplomats, the intelligence officers and development workers.

One of the things that we have to change in this country is the idea that people can't disagree without challenging each other's character and patriotism. I have never suggested that Sen. McCain picks his positions on national security based on politics or personal ambition. I have not suggested it because I believe that he genuinely wants to serve America's national interest. Now, it's time for him to acknowledge that I want to do the same. Let me be clear: I will let no one question my love of this country.

Part of what's changed in politics is social media and how people are receiving information.

There is a reason why George Washington is always one of the top three presidents, and it's not because of his prowess as a military leader; it's not because of the incredible innovations in policy that he introduced. It's because he knew when it was time to go.

I was able to excite and engage people who previously hadn't been involved in politics, and part of the reason that I was able to be re-elected and stay relatively popular in the United States was because even when the economy was bad or we had problems, people sensed that I listened to them and I was on their side.

Jerusalem will remain the capital of Israel and it must remain undivided."Truth: Obama later said, "This was an example where we had some poor phrasing in the speech and we immediately tried to correct the interpretation that was given. The point we were simply making was, is that we don't want barbed wire running through Jerusalem.

The president does not have power under the Constitution to unilaterally authorize a military attack in a situation that does not involve stopping an actual or imminent threat to the nation. As commander in chief, the president does have a duty to protect and defend the United States. In instances of self-defense, the president would be within his constitutional authority to act before advising Congress or seeking its consent.