Reflecting on his years in prison, Nelson Mandela wrote that there were dark moments that tested his faith in humanity, but he refused to give up.

The challenges posed by threats like terrorism, proliferation, and cyber attacks are not going away any time soon, and for our intelligence community to be effective over the long haul, we must maintain the trust of the American people and people around the world.

On the one hand information is moving quick or the way in which people consume information is changing so fast. Clearly this worked for [Donald Trump], and it gives him a direct connection to a lot of the people that voted for him.

Our friends at the Republican convention were more than happy to talk about everything they think is wrong with America, but they didn't have much to say about how they'd make it right. They want your vote, but they don't want you to know their plan.

It's time to end the hypocrisy of those who accumulate wealth through the global economy, and then siphon funds to those who teach children to tear it down.

This is American leadership at its best: We stand with people who fight for their own freedom, and we rally other nations on behalf of our common security and common humanity.

We will not engage in an endless process of negotiations.