I do think that I am generally optimistic.

I feel good when I'm engaged in what I think are the core issues of the society, and those core issues to me are what's happening to poor folks in this society.

As the world's largest economy and second-largest carbon emitter, as a country with unsurpassed ability to drive innovation and scientific breakthroughs, as the country that people around the world continue to look to in times of crisis, we've got a vital role to play. We can't stand on the sidelines. We've got a unique responsibility.

He described to me how crocodiles kill more people than sharks. There are just a lot of things in Australia that can kill you.

One of the things that I've urged the president-elect to do is to develop a strong working relationship with the intelligence community and I think it's important that Congress, on a bipartisan basis.

I'm not the strapping young Muslim socialist that I used to be.

Isil poses a threat to the people of Iraq and Syria, and the broader Middle East - including American citizens, personnel and facilities. If left unchecked, these terrorists could pose a growing threat beyond that region, including to the United States.