The biggest threat that we face right now is not a nuclear missile coming over the skies. It's in a suitcase. This is why the issue of nuclear proliferation is so important. It is the - the biggest threat to the United States is a terrorist getting their hands on nuclear weapons.

The study of law can be disappointing at times, a matter of applying narrow rules and arcane procedure to an uncooperative reality; a sort of glorified accounting that serves to regulate the affairs of those who have power--and that all too often seeks to explain, to those who do not, the ultimate wisdom and justness of their condition. But that's not all the law is. The law is also memory; the law also records a long-running conversation, a nation arguing with its conscience.

We've evolved a lot since 9/11 also, in terms of our law enforcement capabilities, our intelligence capabilities, military, counterterrorism.

The profound mistake of Reverend Wright's sermons is not that he spoke about racism in our society. It's that he spoke as if our society was static; as if no progress has been made; as if this country - a country that has made it possible for one of his own members to run for the highest office in the land and build a coalition of white and black; Latino and Asian, rich and poor, young and old - is still irrevocably bound to a tragic past.

No one built this country on their own. This nation is great because we built it together.

You are part of the first generation of officers to begin your service in a world where the effects of climate change are so clearly upon us. Climate change will shape how every one of our services plan, operate, train, equip, and protect their infrastructure, today and for the long-term.

[Young people] are showing enormous and entrepreneurship and working with each other across borders.