Barack Obama: “The NATO alliance has been the cornerstone of transatlantic security for the past 60 years.”

That's what I hope every visitor to this center takes away from their experience.

Now the ball’s in your court, Iowa.

I think when you understand the complexities of America and the contradictions of America, I don’t think it makes you love it less. I think it makes you love it more.

We’ve now fought a war, spent billions and billions of dollars, you know, put enormous strain on our military. A lot of people have died. And it feels like we’re back where we were before we started the war, except maybe a little bit worse…