Violence has to end. And Israelis have a bright to defend themselves against any violence that is attacking innocent people with a knife in the old city in Jerusalem or elsewhere. No country should be under siege like that.

Those who try to stifle the vibrancy of our democracy and shield policies from scrutiny behind a false cloak of patriotism miss the real value of what our troops defend and how we best defend our troops. We will ask questions and we will defend our democracy.

Palestinians need to stop the incitement. They need to stop that kind of activity. But at the same time, there is a need to see the broader conflict here and understand that there has to be some kind of ultimately negotiated political track that's going to resolve the difference between Palestinians and Israelis.

We are being Americans when we hold our government to account. We are being false to our troops when we send them to a needless war, betraying their trust when we shortchange them on protective equipment, and cheating them when we silently cut their benefits.

I had a chance to talk with President [Vladimir] Putin and he clearly said to me very directly, "I will think about that. I will think about this challenge of how we win." Look, this is not easy for Putin. Everybody says, "Oh, Putin's made a big move." Well, Putin is [in Syria] now; and if he wants to fight ISIL alone, that's a challenge, folks.

I'm going to be a president who believes in science.

This fight against drilling in the Arctic Refuge is a fight about our principles. Its about standing up for our environment, our families and our future, and I wont give up this fight.