I didn't have a perfect model, but I wanted to try to blend my own personal reflections and experiences with this broader canvas to see how a lot of the narratives we have about economy and foreign policy got stuck. Because we have these categories of liberal, conservative, free marketer, open government - all these stereotypes about our politics and the categories we try to put things in are inadequate to this sort of complex, ambiguous, sometimes contradictory experience we have as ordinary people and that I have as an elected official.

I want to express our grieve and condolences to the families of two hostages: one American, Dr. Warren Weinstein and an Italian Giovanni LaPorto who were tragically killed in a U.S. counterterrorism operation.

I think it's very important to remember that so much of the work that gets done between countries is not done at the level of presidents, but is done within various agencies, whether it's law enforcement or economic ministries. And when they establish relationships and systems of communications and shared projects and shared visions, those structures continue even after any particular president is gone. It builds trust and understanding between countries that are critically important.

My main message is to the parents of Trayvon Martin. You know, if I had a son, he'd look like Trayvon.

Maybe at the same time as I'm more confident today, I'm also more humble.

The hard truth is carbon pollution has built up in our atmosphere for decades now. And even if we Americans do our part, the planet will slowly keep warming for some time to come.

The Iranian people are getting restive because of the challenges that sanctions have posed to their economy.