We are not going to keep the window open forever.

If we're going to prevent people from being susceptible to the false promises of extremism, then the international community has to offer something better and the United States intends to do its part.

The other reason might be that you want to talk to voters when you've got seven primaries in seven days. Understand what's happened in this race - where we campaign actively in a state, and voters have the chance to see me directly, they check under the hood, and they kick the tires, when we don't have as much time.

We agreed that our economic and financial teams will remain in close contact as we stay focused on ensuring economic growth and financial stability.

So don't get cynical. Cynicism didn't put a man on the moon. Cynicism has never won a war, or cured a disease, or built a business, or fed a young mind. Cynicism is a choice. And hope will always be a better choice.

Since I've been in the Senate, is that my work with people like Tom Coburn on opening up transparency in government, making sure that every dollar the federal government spends that's out there - that that's all posted on a searchable database on the Internet.

What makes America exceptional are the bonds that hold together the most diverse nation on earth.