Increasingly, we are seeing cyber attacks coming from states, organs of states. The most recent and troubling of these has been Russia.

If you see violence, condemn it.

You cannot be afraid to present yourself. And sometimes that takes practice. If you're not comfortable with public speaking - and nobody starts out comfortable, you have to learn how to be comfortable - practice. I cannot overstate the importance of practicing. Get some close friends or family members to help evaluate you, or somebody at work that you trust.

You can ask anybody who's ever worked for me or worked with me, who's ever served with me, when I tell you I'm going to try to do something, I will get up every single day and work my heart out for you.

We do have the nuclear weapons agreement with Iran, that's an enforcement consequence, action for action, follow on. We have a plan, we will watch them, we will be vigilant.

Donald Trump is reinforcing harmful stereotypes and offering a dog whistle to his most hateful supporters. It's a disturbing preview of what kind of president he'd be.

You don't insult American Muslims and religiously profile them the way that has been suggested by Ted Cruz.